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Articles 31 - 60 of 197
Full-Text Articles in Physical Sciences and Mathematics
Graphene-Tailored Thermodynamics And Kinetics To Fabricate Metal Borohydride Nanoparticles With High Purity And Enhanced Reversibility, Hongyu Zhang, Guanglin Xia, Jian Zhang, Dalin Sun, Zaiping Guo, Xuebin Yu
Graphene-Tailored Thermodynamics And Kinetics To Fabricate Metal Borohydride Nanoparticles With High Purity And Enhanced Reversibility, Hongyu Zhang, Guanglin Xia, Jian Zhang, Dalin Sun, Zaiping Guo, Xuebin Yu
Australian Institute for Innovative Materials - Papers
Due to their ultrahigh theoretical capacity, metal borohydrides are considered to be one of the most promising candidate hydrogen storage materials. Their application still suffers, however, from high operating temperature, sluggish kinetics, and poor reversibility. Designing nanostructures is an effective way of addressing these issues, but seeking suitable approaches remains a big challenge. Here, a space-confined solid-gas reaction to synthesize Mg(BH 4 ) 2 nanoparticles supported on grapheme is reported, which serves as the structural support for the dispersed Mg(BH 4 ) 2 nanoparticles. More notably, density functional theory calculations reveal that graphene could weaken both the MgH bonds of …
Lanthanide Doping Induced Electrochemical Enhancement Of Na2ti3o7 Anodes For Sodium-Ion Batteries, Jiale Xia, Hongyang Zhao, Wei Kong Pang, Zongyou Yin, Bo Zhou, Gang He, Zaiping Guo, Yaping Du
Lanthanide Doping Induced Electrochemical Enhancement Of Na2ti3o7 Anodes For Sodium-Ion Batteries, Jiale Xia, Hongyang Zhao, Wei Kong Pang, Zongyou Yin, Bo Zhou, Gang He, Zaiping Guo, Yaping Du
Australian Institute for Innovative Materials - Papers
Na2Ti3O7 is considered as a promising anode material for sodium ion batteries (SIBs) due to its excellent high-rate performance compared with hard carbons. However, the electrochemical performance of Na2Ti3O7 is heavily limited by its low electrical conductivity. In this study, we synthesized a series of lanthanide (Ln = La, Ce, Nd, Sm, Gd, Er, and Yb) doped microsized Na2Ti3O7 anode materials and systematically studied the electrochemical performance. Compared with pristine Na2Ti3O7, all the doped samples show superior electrochemical performance. Especially, the Yb3+ doped sample not only delivers a high reversible capacity of 89.4 mA h g−1 at 30C, but also …
One Dimensional Hierarchical Nanostructures Composed Of Cds Nanosheets/Nanoparticles And Ag Nanowires With Promoted Photocatalytic Performance, Jinyan Xiong, Xulei Du, Gang Cheng, Huagui Yang, Jun Chen, Shi Xue Dou, Zhen Li
One Dimensional Hierarchical Nanostructures Composed Of Cds Nanosheets/Nanoparticles And Ag Nanowires With Promoted Photocatalytic Performance, Jinyan Xiong, Xulei Du, Gang Cheng, Huagui Yang, Jun Chen, Shi Xue Dou, Zhen Li
Australian Institute for Innovative Materials - Papers
Constructing one-dimensional (1D) hierarchical photocatalysts is deemed to be central to promoting photocatalytic capacity. In this paper, 1D hierarchical structures composed of CdS nanosheets/nanoparticles on Ag nanowires (denoted as 1D Ag@CdS core-shell hierarchical hetero-nanowires) have been fabricated via a wet-chemistry approach at low temperature. The optimization of the synthetic parameters indicates that the amounts of Cd(NO 3 ) 2 ·4H 2 O and thiourea play important roles in the construction of the 1D hierarchical structures. The as-prepared 1D hierarchical Ag@CdS core-shell hetero-nanowires exhibit efficient photocatalytic performance in both methyl orange (MO) degradation (degrade 96% of MO within 240 min) and …
Solid-State Poly(Ionic Liquid) Gels For Simultaneous Co2 Adsorption And Electrochemical Reduction, Tania Benedetti Goncales, Sina Naficy, Ashley Walker, David L. Officer, Gordon G. Wallace, Fariba Dehghani
Solid-State Poly(Ionic Liquid) Gels For Simultaneous Co2 Adsorption And Electrochemical Reduction, Tania Benedetti Goncales, Sina Naficy, Ashley Walker, David L. Officer, Gordon G. Wallace, Fariba Dehghani
Australian Institute for Innovative Materials - Papers
Managing carbon dioxide (CO2) released from large-scale industrial processes is of great importance, yet there remain significant technical challenges. Herein, the fabrication of 1- mm-thick solid-state electrochemical devices based on poly- (ionic liquid) ionogels with embedded electrodes capable of both adsorption and electrochemical reduction of CO2 is reported. The ionogels are prepared via radical polymerization and chemical crosslinking of a vinyl imidazolium trifluoromethanesulfonimide ionic liquid monomer in the presence of additional ionic liquids (ILs) that act as swelling agents and enhance ionic conductivity. The effects of the ILs concentration and the degree of crosslinking on the mechanical properties, conductivity, and …
Structural Design Of Anode Materials For Sodium-Ion Batteries, Wanlin Wang, Weijie Li, Shun Wang, Zongcheng Miao, Hua-Kun Liu, Shulei Chou
Structural Design Of Anode Materials For Sodium-Ion Batteries, Wanlin Wang, Weijie Li, Shun Wang, Zongcheng Miao, Hua-Kun Liu, Shulei Chou
Australian Institute for Innovative Materials - Papers
With the high consumption and increasing price of lithium resources, sodium ion batteries (SIBs) have been considered as attractive and promising potential alternatives to lithium ion batteries, owing to the abundance and low cost of sodium resources, and the similar electrochemical properties of sodium to lithium. Nevertheless, the lower energy density and limited cycling life of SIBs are still the main challenges impeding their wide application. Tremendous work has been done on anode materials for SIBs, and rational structural design is considered as an effective way to enhance their electrochemical performance. In this review, different types of anode materials for …
Microscopic Origin Of Highly Enhanced Supercurrent In 122 Pnictide Superconductor, Jincheng Zhuang, Wai Kong Yeoh, H W. Yen, Xun Xu, Yi Du, H Liu, Chao Yao, Yanwei Ma, Xiaolin Wang, Simon Peter Ringer, Shi Xue Dou
Microscopic Origin Of Highly Enhanced Supercurrent In 122 Pnictide Superconductor, Jincheng Zhuang, Wai Kong Yeoh, H W. Yen, Xun Xu, Yi Du, H Liu, Chao Yao, Yanwei Ma, Xiaolin Wang, Simon Peter Ringer, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
By a combination of microstructure analysis techniques, we reveal the structural origin of the extremely high supercurrent (up to the practical level of 0.1 MA/cm 2 at 10 T, 4.2 K) in Sr 0.6 K 0.4 Fe 2 As 2 (122) tape. Transmission Kikuchi diffraction analysis reveals that hot pressing promotes a very high fraction of low-angle grain boundaries and texturing of the crystals, which is beneficial for the intergrain physical properties. Moreover, the unique characteristics of low-angle grain boundaries favor both long-range dislocations and short-range dislocations that totally change the pinning mechanism of the bulk 122 system. These defects …
Magnesium Hydride Nanoparticles Self-Assembled On Graphene As Anode Material For High-Performance Lithium-Ion Batteries, Baoping Zhang, Guanglin Xia, Dalin Sun, Fang Fang, Xuebin Yu
Magnesium Hydride Nanoparticles Self-Assembled On Graphene As Anode Material For High-Performance Lithium-Ion Batteries, Baoping Zhang, Guanglin Xia, Dalin Sun, Fang Fang, Xuebin Yu
Australian Institute for Innovative Materials - Papers
MgH 2 nanoparticles (NPs) uniformly anchored on graphene (GR) are fabricated based on a bottom-up self-assembly strategy as anode materials for lithium-ion batteries (LIBs). Monodisperse MgH 2 NPs with an average particle size of ∼13.8 nm are self-assembled on the flexible GR, forming interleaved MgH 2 /GR (GMH) composite architectures. Such nanoarchitecture could effectively constrain the aggregation of active materials, buffer the strain of volume changes, and facilitate the electron/lithium ion transfer of the whole electrode, leading to a significant enhancement of the lithium storage capacity of the GMH composite. Furthermore, the performances of GMH composite as anode materials for …
Pedot Doped With Algal, Mammalian And Synthetic Dopants: Polymer Properties, Protein And Cell Interactions, And Influence Of Electrical Stimulation On Neuronal Cell Differentiation, Paul J. Molino, Luke Garcia, Elise M. Stewart, M Lamaze, Bohai Zhang, Alexander R. Harris, Pia C. Winberg, Gordon G. Wallace
Pedot Doped With Algal, Mammalian And Synthetic Dopants: Polymer Properties, Protein And Cell Interactions, And Influence Of Electrical Stimulation On Neuronal Cell Differentiation, Paul J. Molino, Luke Garcia, Elise M. Stewart, M Lamaze, Bohai Zhang, Alexander R. Harris, Pia C. Winberg, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Poly(3,4-ethylenedioxythiophene) (PEDOT) films were electrochemically polymerised with several synthetic (dodecylbenzosulfonic acid (DBSA)) and biological (dextran sulphate (DS), chondroitin sulphate (CS), alginic acid (ALG) and ulvan (ULV)) dopant anions, and their physical, mechanical and electrochemical properties characterised. PEDOT films incorporating the biological dopants ALG and ULV produced films of the greatest surface roughness (46 ± 5.1 and 31 ± 1.9 nm, respectively), and demonstrated significantly lower shear modulus values relative to all other PEDOT films (2.1 ± 0.1 and 1.2 ± 0.2 MPa, respectively). Quartz crystal microgravimetry was used to study the adsorption of the important extracellular matrix protein fibronectin, revealing …
Activating Titania For Efficient Electrocatalysis By Vacancy Engineering, Haifeng Feng, Zhongfei Xu, Long Ren, Chen Liu, Jincheng Zhuang, Zhenpeng Hu, Xun Xu, Jun Chen, Jiaou Wang, Weichang Hao, Yi Du, Shi Xue Dou
Activating Titania For Efficient Electrocatalysis By Vacancy Engineering, Haifeng Feng, Zhongfei Xu, Long Ren, Chen Liu, Jincheng Zhuang, Zhenpeng Hu, Xun Xu, Jun Chen, Jiaou Wang, Weichang Hao, Yi Du, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
Pursuing efficient and low-cost electrocatalysts is crucial for the performance of water-alkali electrolyzers toward water splitting. Earth-abundant transition-metal oxides, in spite of their alluring performances in the oxygen evolution reaction, are thought to be inactive in the hydrogen evolution reaction in alkaline media. Here, we demonstrate that pure TiO 2 single crystals, a typical transition-metal oxide, can be activated toward electrocatalytic hydrogen evolution reaction in alkaline media through engineering interfacial oxygen vacancies. Experimental and theoretical results indicate that subsurface oxygen vacancies and low-coordinated Ti ions (Ti 3+ ) can enhance the electrical conductivity and promote electron transfer and hydrogen desorption, …
Creating Fast Ion Conducting Composites Via In-Situ Introduction Of Titanium As Oxygen Getter, Wenchao Zhang, Jianfeng Mao, Wei Kong Pang, Xing Wang, Zaiping Guo
Creating Fast Ion Conducting Composites Via In-Situ Introduction Of Titanium As Oxygen Getter, Wenchao Zhang, Jianfeng Mao, Wei Kong Pang, Xing Wang, Zaiping Guo
Australian Institute for Innovative Materials - Papers
Metal-ion batteries are promising for large-scale energy storage. Their potential commercialization not only depends on their superior electrochemical performance, but also on the large-scale synthesis cost of electrode materials. In the conventional industrial technology for producing non-oxides, argon protection is required to avoid oxidation, leading to additional costs and extra processing. We demonstrate, without protection gas, that ball milling in air with a small amount of Ti additive can be a cost-effective approach for preparing high-performance alloy anodes. Ti consumes the oxygen, forming TiO 2 ( < 10 nm) in situ with high ionic conductivity, while also preventing oxidation and sustaining the electrical conductivity of carbon. This strategy effectively promotes the rate capability (61% capacity retention from 60 to 3000 mA g −1 ) of SnSb/carbon-nanotube anode (over 204% better than without Ti additive).
Plasma-Induced Amorphous Shell And Deep Cation-Site S Doping Endow Tio2 With Extraordinary Sodium Storage Performance, Hanna He, Dan Huang, Wei Kong Pang, Dan Sun, Qi Wang, Yougen Tang, Xiaobo Ji, Zaiping Guo, Haiyan Wang
Plasma-Induced Amorphous Shell And Deep Cation-Site S Doping Endow Tio2 With Extraordinary Sodium Storage Performance, Hanna He, Dan Huang, Wei Kong Pang, Dan Sun, Qi Wang, Yougen Tang, Xiaobo Ji, Zaiping Guo, Haiyan Wang
Australian Institute for Innovative Materials - Papers
Structural design and modification are effective approaches to regulate the physicochemical properties of TiO 2 , which play an important role in achieving advanced materials. Herein, a plasma-assisted method is reported to synthesize a surface-defect-rich and deep-cation-site-rich S doped rutile TiO 2 (R-TiO 2- x -S) as an advanced anode for the Na ion battery. An amorphous shell (≈3 nm) is induced by the Ar/H 2 plasma, which brings about the subsequent high S doping concentration (≈4.68 at%) and deep doping depth. Experimental results and density functional theory calculations demonstrate greatly facilitated ion diffusion, improved electronic conductivity, and an increased …
Metal-Organic Framework-Derived One-Dimensional Porous Or Hollow Carbon-Based Nanofibers For Energy Storage And Conversion, Chaohai Wang, Yusuf Valentino Kaneti, Yoshio Bando, Jianjian Lin, Chao Liu, Jiansheng Li, Yusuke Yamauchi
Metal-Organic Framework-Derived One-Dimensional Porous Or Hollow Carbon-Based Nanofibers For Energy Storage And Conversion, Chaohai Wang, Yusuf Valentino Kaneti, Yoshio Bando, Jianjian Lin, Chao Liu, Jiansheng Li, Yusuke Yamauchi
Australian Institute for Innovative Materials - Papers
Metal organic framework (MOF)-derived nanoporous carbons (NPCs) have been proposed as promising electrode materials for energy storage and conversion devices. However, MOF-derived NPCs typically suffer from poor electrical conductivity due to the lack of connectivity between these particles and a micropore-dominated storage mechanism, which hinder mass and electron transfer, thereby leading to poor electrochemical performance. In recent years, one-dimensional (1D) MOF-derived carbon nanostructures obtained using an electrospinning method have emerged as promising materials for both electrochemical energy storage (EES) and energy conversion applications. In this mini review, the recent progress in the development of MOF-derived 1D porous or hollow carbon …
Formation Of Hollow Mos2/Carbon Microspheres For High Capacity And High Rate Reversible Alkali-Ion Storage, Tianyu Yang, Ji Liang, Irin Sultana, Md. Mokhlesur Rahman, Michael J. Monteiro, Ying I. Chen, Zongping Shao, S Ravi. P Silva, Jian Liu
Formation Of Hollow Mos2/Carbon Microspheres For High Capacity And High Rate Reversible Alkali-Ion Storage, Tianyu Yang, Ji Liang, Irin Sultana, Md. Mokhlesur Rahman, Michael J. Monteiro, Ying I. Chen, Zongping Shao, S Ravi. P Silva, Jian Liu
Australian Institute for Innovative Materials - Papers
Nanocomposites of carbon and molybdenum disulfide have attracted much attention due to their significant potential in energy conversion and storage applications. However, the preparation of these 0-D MoS 2 /carbon composites with controllable structures and desirable properties remains a major manufacturing challenge, particularly at low cost suitable for scaling-up. Here, we report a facile solution-based method to prepare porous hierarchical 0-D MoS 2 /carbon nanocomposites with vertical MoS 2 growth on a hollow carbon support, suitable for the electrochemical storage of lithium and sodium ions. The vertically aligned MoS 2 /hollow carbon material shows excellent performance in the storage of …
Carbon Hollow Nanobubbles On Porous Carbon Nanofibers: An Ideal Host For High-Performance Sodium-Sulfur Batteries And Hydrogen Storage, Guanglin Xia, Lijun Zhang, Xiaowei Chen, Yuqin Huang, Dalin Sun, Fang Fang, Zaiping Guo, Xuebin Yu
Carbon Hollow Nanobubbles On Porous Carbon Nanofibers: An Ideal Host For High-Performance Sodium-Sulfur Batteries And Hydrogen Storage, Guanglin Xia, Lijun Zhang, Xiaowei Chen, Yuqin Huang, Dalin Sun, Fang Fang, Zaiping Guo, Xuebin Yu
Australian Institute for Innovative Materials - Papers
One-dimensional (1D) carbon nanostructures have been intensively investigated because of their intriguing features and great potential for practical application in various fields. This paper reports the controllable fabrication of carbon hollow nanobubbles on porous carbon nanofibers (CHNBs@PCNFs) through a general electrospinning strategy, with metal azides serving as both a bubbling and a porogen reagent. The strong repulsive forces resulting from the intense release of N 2 from the decomposition of metal azides upon carbonization leads to the uniform formation of porous carbon nanofibers (PCNFs), which could be facile tuned by heating rates and the amount of the bubbling reagent, simultaneously …
Coercivity Degradation Caused By Inhomogeneous Grain Boundaries In Sintered Nd-Fe-B Permanent Magnets, Hansheng Chen, Fan Yun, Jiangtao Qu, Yingfei Li, Zhenxiang Cheng, Ruhao Fang, Zhixiao Ye, Simon Peter Ringer, Rongkun Zheng
Coercivity Degradation Caused By Inhomogeneous Grain Boundaries In Sintered Nd-Fe-B Permanent Magnets, Hansheng Chen, Fan Yun, Jiangtao Qu, Yingfei Li, Zhenxiang Cheng, Ruhao Fang, Zhixiao Ye, Simon Peter Ringer, Rongkun Zheng
Australian Institute for Innovative Materials - Papers
Quantitative correlation between intrinsic coercivity and grain boundaries in three dimensions is critical to further improve the performance of sintered Nd-Fe-B permanent magnets. Here, we quantitatively reveal the local composition variation across and especially along grain boundaries using the powerful atomic-scale analysis technique known as atom probe tomography. We also estimate the saturation magnetization, magnetocrystalline anisotropy constant, and exchange stiffness of the grain boundaries on the basis of the experimentally determined structure and composition. Finally, using micromagnetic simulations, we quantify the intrinsic coercivity degradation caused by inhomogeneous grain boundaries. This approach can be applied to other magnetic materials for the …
Towards Thermally Stable High Performance Lithium-Ion Batteries: The Combination Of A Phosphonium Cation Ionic Liquid And A 3d Porous Molybdenum Disulfide/Graphene Electrode, Yu Ge, Cristina Pozo-Gonzalo, Yong Zhao, Xiaoteng Jia, Robert L. Kerr, Caiyun Wang, Patrick Howlett, Gordon G. Wallace
Towards Thermally Stable High Performance Lithium-Ion Batteries: The Combination Of A Phosphonium Cation Ionic Liquid And A 3d Porous Molybdenum Disulfide/Graphene Electrode, Yu Ge, Cristina Pozo-Gonzalo, Yong Zhao, Xiaoteng Jia, Robert L. Kerr, Caiyun Wang, Patrick Howlett, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
We report a thermally stable high-performance lithium battery using an electrochemically synthesized three-dimensional porous molybdenum disulfide/graphene composite electrode and a phosphonium-based ionic liquid (IL) electrolyte. Benefiting from the structural merits of the chosen electrode and the thermal stability of the electrolyte, the cell coupled with a Li foil exhibits excellent rate performance and cycling capability at room temperature; and that is retained with an even better rate capability at an elevated temperature of 50 8C. This work may provide a new avenue for the development of safe and high performance lithium-ion batteries at high temperature.
Measuring The Effective Area And Charge Density Of Platinum Electrodes For Bionic Devices, Alexander R. Harris, C Newbold, P Carter, R Cowan, Gordon G. Wallace
Measuring The Effective Area And Charge Density Of Platinum Electrodes For Bionic Devices, Alexander R. Harris, C Newbold, P Carter, R Cowan, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Objective. Neural stimulation is usually performed with fairly large platinum electrodes. Smaller electrodes increase the applied charge density, potentially damaging the electrode. Greater understanding of the charge injection mechanism is required for safe neural stimulation. Approach. The charge injection mechanism and charge injection capacity were measured by cyclic voltammetry. Electrodes were cleaned mechanically or by potential cycling in acidic solutions. The effective electrode area was measured by hydrogen adsorption or reduction of Ru(NH3) 3+ 6 . Main results. The water window and safe potential window were affected by changes to electrolyte, electrode size, polishing method and oxygen concentration. Capacitance and …
In Situ Construction Of Yolk-Shell Zinc Cobaltite With Uniform Carbon Doping For High Performance Asymmetric Supercapacitors, Xiaoya Chang, Lei Zang, Song Liu, Mengying Wang, Huinan Guo, Caiyun Wang, Yijing Wang
In Situ Construction Of Yolk-Shell Zinc Cobaltite With Uniform Carbon Doping For High Performance Asymmetric Supercapacitors, Xiaoya Chang, Lei Zang, Song Liu, Mengying Wang, Huinan Guo, Caiyun Wang, Yijing Wang
Australian Institute for Innovative Materials - Papers
Zinc cobaltite (ZnCo 2 O 4 ) is a promising material for supercapacitors with appreciable theoretical capacitance. However, it suffers from poor electrical conductivity and large volume expansion during charge-discharge processes. In this work, a novel material, ZnCo 2 O 4 /C microspheres in a yolk-shell structure, is fabricated by a facile refluxing process in combination with a calcination treatment. Carbon is in situ formed via the pyrolysis of polyvinyl pyrrolidone and uniformly dispersed both in the core and the shell. Benefiting from the unique structure and the synergistic effect of the two components, this material exhibits remarkable electrochemical properties …
Recent Progress On Liquid Metals And Their Applications, Guyue Bo, Long Ren, Xun Xu, Yi Du, Shi Xue Dou
Recent Progress On Liquid Metals And Their Applications, Guyue Bo, Long Ren, Xun Xu, Yi Du, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
Gallium-based liquid metals show excellent thermal and electrical conductivities with low viscosity and non-toxicity. Their melting points are either lower than or close to room temperature, which endows them with additional advantages in comparison to the solid metals; for example, they are flexible, stretchable and reformable at room temperature. Recently, great improvements have been achieved in developing multifunctional devices by using Ga-based liquid metals, including actuators, flexible circuits, bio-devices and self-healing superconductors. Here, we review recent research progress on Gallium-based liquid metals, especially on the applications aspects. These applications are mainly based on the unique properties of liquid metals, including …
Ultra-Small Nanocluster Mediated Synthesis Of Nd3+-Doped Core-Shell Nanocrystals With Emission In The Second Near-Infrared Window For Multimodal Imaging Of Tumor Vasculature, Feng Ren, Lihua Ding, Hanghang Liu, Qian Huang, Hao Zhang, Lijuan Zhang, Jianfeng Zeng, Qiao Sun, Zhen Li, Mingyuan Gao
Ultra-Small Nanocluster Mediated Synthesis Of Nd3+-Doped Core-Shell Nanocrystals With Emission In The Second Near-Infrared Window For Multimodal Imaging Of Tumor Vasculature, Feng Ren, Lihua Ding, Hanghang Liu, Qian Huang, Hao Zhang, Lijuan Zhang, Jianfeng Zeng, Qiao Sun, Zhen Li, Mingyuan Gao
Australian Institute for Innovative Materials - Papers
In-vivo intravital short wavelength infrared (SWIR, 1000-2300 nm) fluorescence imaging has attracted considerable attention in the imaging of tumor vasculature due to its low background, high sensitivity, and deep penetration. It can noninvasively provide dynamic feedback on the tumorigenesis, growth, necrosis and metastasis. Herein, monodisperse Nd3+-doped core-shell downconversion luminescent nanocrystals with strong emission in the second near-infrared (NIR II) window, strong temperature-dependent paramagnetism and fast attenuation to X-rays were prepared from ultra-small nanoclusters. The use of nanoclusters resulted in very uniform bright nanocrystals with a relative quantum yield comparable to the standard dye IR-26. These bright NIR nanocrystals were modified …
Hybrid 2d Dual-Metal-Organic Frameworks For Enhanced Water Oxidation Catalysis, Kun Rui, Guoqiang Zhao, Yaping Chen, Y C. Lin, Qian Zhou, Jiayi Chen, Jixin Zhu, Wenping Sun, Wei Huang, Shi Xue Dou
Hybrid 2d Dual-Metal-Organic Frameworks For Enhanced Water Oxidation Catalysis, Kun Rui, Guoqiang Zhao, Yaping Chen, Y C. Lin, Qian Zhou, Jiayi Chen, Jixin Zhu, Wenping Sun, Wei Huang, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
Metal-organic frameworks (MOFs) and MOF-derived nanostructures are recently emerging as promising catalysts for electrocatalysis applications. Herein, 2D MOFs nanosheets decorated with Fe-MOF nanoparticles are synthesized and evaluated as the catalysts for water oxidation catalysis in alkaline medium. A dramatic enhancement of the catalytic activity is demonstrated by introduction of electrochemically inert Fe-MOF nanoparticles onto active 2D MOFs nanosheets. In the case of active Ni-MOF nanosheets (Ni-MOF at Fe-MOF), the overpotential is 265 mV to reach a current density of 10 mA cm -2 in 1 m KOH, which is lowered by ≈100 mV after hybridization due to the 2D nanosheet …
Solution-Grown Dendritic Pt-Based Ternary Nanostructures For Enhanced Oxygen Reduction Reaction Functionality, Gerard Leteba, David R. G Mitchell, Pieter Levecque, Candace Lang
Solution-Grown Dendritic Pt-Based Ternary Nanostructures For Enhanced Oxygen Reduction Reaction Functionality, Gerard Leteba, David R. G Mitchell, Pieter Levecque, Candace Lang
Australian Institute for Innovative Materials - Papers
Nanoalloys with anisotropic morphologies of branched and porous internal structures show great promise in many applications as high performance materials. Reported synthetic approaches for branched alloy nanostructures are, however, limited by the synthesis using a seed-growth process. Here, we demonstrate a conveniently fast and one-pot solution-phase thermal reduction strategy yielding nanoalloys of Pt with various solute feed ratios, exhibiting hyperbranched morphologies and good dispersity. When Pt was alloyed with transition metals (Ni, Co, Fe), we observed well-defined dendritic nanostructures in PtNi, PtCo and Pt(NiCo), but not in PtFe, Pt(FeNi) or Pt(FeCo) due to the steric hindrance of the trivalent Fe(acac)3precursor …
Facile Synthesis Of Palladium-Nanoparticle-Embedded N-Doped Carbon Fibers For Electrochemical Sensing, Kyubin Shim, Zhongli Wang, Tasnima Haque Mou, Yoshio Bando, Abdulmohsen Alshehri, Jeonghun Kim, Md. Shahriar Al Hossain, Yusuke Yamauchi, Jung Ho Kim
Facile Synthesis Of Palladium-Nanoparticle-Embedded N-Doped Carbon Fibers For Electrochemical Sensing, Kyubin Shim, Zhongli Wang, Tasnima Haque Mou, Yoshio Bando, Abdulmohsen Alshehri, Jeonghun Kim, Md. Shahriar Al Hossain, Yusuke Yamauchi, Jung Ho Kim
Australian Institute for Innovative Materials - Papers
2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. In recent years, there have been many studies on metal/carbon hybrid materials for electrochemical applications. However, reducing the metal content in catalysts is still a challenge. Here, a facile synthesis of palladium (Pd) nanoparticle-embedded N-doped carbon fibers (Pd/N-C) through electropolymerization and reduction methods is demonstrated. The as-prepared Pd/N-C contains only 1.5wt% Pd. Under optimal conditions, bisphenolA is detected by using amperometry in two dynamic ranges from 0.1 to 10μm and from 10 to 200μm, and the obtained correlation coefficients are close to 0.9836 and 0.9987, respectively. The detection limit (DL) for bisphenolA …
Efficient Photocatalytic Degradation Of Malachite Green In Seawater By The Hybrid Of Zinc-Oxide Nanorods Grown On Three-Dimensional (3d) Reduced Graphene Oxide(Rgo)/Ni Foam, Qing Wang, Chaoyue Cai, Mingyan Wang, Qian Guo, Biao Wang, Weina Luo, Yujuan Wang, Chenyan Zhang, Lihua Zhou, Dongen Zhang, Zhi Wei Tong, Yuqing Liu, Jun Chen
Efficient Photocatalytic Degradation Of Malachite Green In Seawater By The Hybrid Of Zinc-Oxide Nanorods Grown On Three-Dimensional (3d) Reduced Graphene Oxide(Rgo)/Ni Foam, Qing Wang, Chaoyue Cai, Mingyan Wang, Qian Guo, Biao Wang, Weina Luo, Yujuan Wang, Chenyan Zhang, Lihua Zhou, Dongen Zhang, Zhi Wei Tong, Yuqing Liu, Jun Chen
Australian Institute for Innovative Materials - Papers
A hybrid of ZnO nanorods grown onto three-dimensional (3D) reduced graphene oxide (RGO)@Ni foam (ZnO/RGO@NF) is synthesized by a facile hydrothermal method. The as-prepared hybrid material is physically characterized by SEM, XRD, Raman, and X-ray photoelectron spectroscopy (XPS).When the as-prepared 3D hybrid is investigated as a photocatalyst, it demonstrates significant high photocatalytic activity for the degradation of methylene blue (MB), rhodamine (RhB), and mixed MB/RhB as organic dye pollutants. In addition, the practical application and the durability of the as-prepared catalyst to degradation of malachite green (MG) in seawater are firstly assessed in a continuous flow system. The catalyst shows …
Progress And Future Prospects Of High-Voltage And High-Safety Electrolytes In Advanced Lithium Batteries: From Liquid To Solid Electrolytes, Shimou Chen, Kaihua Wen, Juntian Fan, Yoshio Bando, Dmitri Golberg
Progress And Future Prospects Of High-Voltage And High-Safety Electrolytes In Advanced Lithium Batteries: From Liquid To Solid Electrolytes, Shimou Chen, Kaihua Wen, Juntian Fan, Yoshio Bando, Dmitri Golberg
Australian Institute for Innovative Materials - Papers
Developing the next-generation high-energy density and safe batteries is of prime importance to meet the emerging demands in electronics, automobile industries and various energy storage systems. High-voltage lithium-ion batteries (LIBs) and solid-state batteries (SSBs) are two main directions attracting increasing interest in recent years, due to their potential applications in the near future. In both kinds of batteries, the electrolytes play a pivotal role but also create several bottleneck problems. In this review, recent progress in designing electrolytes for high-voltage LIBs and SSBs is summarized. First, the solvents, additives, ionic liquids and superconcentrated salts strategies for constructing high-voltage liquid electrolytes …
Electrical Stimulation With A Conductive Polymer Promotes Neurite Outgrowth And Synaptogenesis In Primary Cortical Neurons In 3d, Qingsheng Zhang, Stephen T. Beirne, Kewei Shu, Dorna Esrafilzadeh, Xu-Feng Huang, Gordon G. Wallace
Electrical Stimulation With A Conductive Polymer Promotes Neurite Outgrowth And Synaptogenesis In Primary Cortical Neurons In 3d, Qingsheng Zhang, Stephen T. Beirne, Kewei Shu, Dorna Esrafilzadeh, Xu-Feng Huang, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Deficits in neurite outgrowth and synaptogenesis have been recognized as an underlying developmental aetiology of psychosis. Electrical stimulation promotes neuronal induction including neurite outgrowth and branching. However, the effect of electrical stimulation using 3D electrodes on neurite outgrowth and synaptogenesis has not been explored. This study examined the effect of 3D electrical stimulation on 3D primary cortical neuronal cultures. 3D electrical stimulation improved neurite outgrowth in 3D neuronal cultures from both wild-Type and NRG1-knockout (NRG1-KO) mice. The expression of synaptophysin and PSD95 were elevated under 3D electrical stimulation. Interestingly, 3D electrical stimulation also improved neural cell aggregation as well as …
Nanocrystalline Cellulose For Anisotropic Magnetoelectric Composites, Yan Zong, Zhilian Yue, Michael J. Higgins
Nanocrystalline Cellulose For Anisotropic Magnetoelectric Composites, Yan Zong, Zhilian Yue, Michael J. Higgins
Australian Institute for Innovative Materials - Papers
The emergence of piezoelectric polymers in magnetoelectric (ME) composites enables flexible and low-cost device fabrication though notably gives rise to the highest ME output voltages to date. Accordingly, the highest piezoresponsive polymers, poly(vinylidene fluoride) (PVDF) and its copolymers, are exclusively studied despite an inventory of unexplored piezoelectric polymers such as naturally occurring cellulose, that is only recently demonstrated in ME composites. Herein, the development of nanocrystalline cellulose (CNC)-based ME composites is reported on. Two types of CNC, nanospheres and nanowhiskers, are synthesized and incorporated in laminate composite, which exhibit a giant α ME ( > 1 V cm -1 Oe -1 …
Discovery Of A Voltage-Stimulated Heartbeat Effect In Droplets Of Liquid Gallium, Zhenwei Yu, Yuchen Chen, Fei Yun, David L. Cortie, Lei Jiang, Xiaolin Wang
Discovery Of A Voltage-Stimulated Heartbeat Effect In Droplets Of Liquid Gallium, Zhenwei Yu, Yuchen Chen, Fei Yun, David L. Cortie, Lei Jiang, Xiaolin Wang
Australian Institute for Innovative Materials - Papers
Chemomechanical effects are known to initiate fluid oscillations in certain liquid metals; however, they typically produce an irregular motion that is difficult to deactivate or control. Here we show that stimulating liquid gallium with electrochemistry can cause a metal drop to exhibit a heart beating effect by shape shifting at a telltale frequency. Unlike the effects reported in the past for mercury, the symmetry-breaking forces generated by using gallium propel the drop several millimeters with velocities of the order of 1 cm per second. We demonstrate pulsating dynamics between 0 and 610 beats per minute for 50-150 μL droplets in …
A "Tandem" Strategy To Fabricate Flexible Graphene/Polypyrrole Nanofiber Film Using The Surfactant-Exfoliated Graphene For Supercapacitors, Kewei Shu, Yunfeng Chao, Shulei Chou, Caiyun Wang, Tian Zheng, Sanjeev Gambhir, Gordon G. Wallace
A "Tandem" Strategy To Fabricate Flexible Graphene/Polypyrrole Nanofiber Film Using The Surfactant-Exfoliated Graphene For Supercapacitors, Kewei Shu, Yunfeng Chao, Shulei Chou, Caiyun Wang, Tian Zheng, Sanjeev Gambhir, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
The surfactant-assisted liquid-phase exfoliation of expanded graphite can produce graphene sheets in large quantities with minimal defects. However, it is difficult to completely remove the surfactant from the final product, thus affecting the electrochemical properties of the produced graphene. In this article, a novel approach to fabricate flexible graphene/polypyrrole film was developed: using surfactant cetyltrimethylammonium bromide as a template for growth of polypyrrole nanofibers (PPyNFs) instead of removal after the exfoliation process; followed by a simple filtration method. The introduction of PPyNF not only increases the electrochemical performance, but also ensures flexibility. This composite film electrode offers a capacitance up …
A Novel High Voltage Battery Cathodes Of Fe2+/Fe3+Sodium Fluoro Sulfate Lined With Carbon Nanotubes For Stable Sodium Batteries, Ranjusha Rajagopalan, Zhenguo Wu, Yumei Liu, Shaymaa Al-Rubaye, En-Hui Wang, Chunjin Wu, Wei Xiang, Benhe Zhong, Xiaodong Guo, Shi Xue Dou, Hua-Kun Liu
A Novel High Voltage Battery Cathodes Of Fe2+/Fe3+Sodium Fluoro Sulfate Lined With Carbon Nanotubes For Stable Sodium Batteries, Ranjusha Rajagopalan, Zhenguo Wu, Yumei Liu, Shaymaa Al-Rubaye, En-Hui Wang, Chunjin Wu, Wei Xiang, Benhe Zhong, Xiaodong Guo, Shi Xue Dou, Hua-Kun Liu
Australian Institute for Innovative Materials - Papers
Current trends in battery research are promoting the development of feasible methods to prepare electrode materials with new architectures that can meet the requirements of high energy density associated with sodium ion batteries (SIB). It is logical to use solid-state processing techniques to fabricate SIB electrode materials due to its ease of handling and capability for large-scale production. From the SIB standpoint, the sulfate based polyanionic system is well known for its high operating voltage. The present study utilizes a hitherto-unknown solid-state process with an entirely new composition to develop an electrode comprising earth abundant carbon, sodium, sulfur, fluorine, and …