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Articles 1 - 30 of 173
Full-Text Articles in Engineering
Calcined Chicken Eggshell Electrode For Battery And Supercapacitor Applications, Manickam Minakshi, Stephen Higley, Christian Baur, David R. G Mitchell, Robert Jones, Maximilian Fichtner
Calcined Chicken Eggshell Electrode For Battery And Supercapacitor Applications, Manickam Minakshi, Stephen Higley, Christian Baur, David R. G Mitchell, Robert Jones, Maximilian Fichtner
Australian Institute for Innovative Materials - Papers
Biowaste eggshell can be used as a cathode while in its calcined form and it is found to be suitable as an anode in an electrochemical cell. This not only enables energy to be stored reversibly but also achieves waste management and sustainability goals by redirecting material away from landfill. Biowaste eggshell comprises 94% calcium carbonate (CaCO3; calcite), an attractive divalent ion source as a viable option for energy storage. X-ray diffraction and electron microscopy coupled with energy dispersive analyses of the calcined (thermally decomposed) biowaste eggshell show that CaO has been formed and the reaction is topotactic. Field emission …
Tunable Conducting Polymers: Toward Sustainable And Versatile Batteries, Xiaoteng Jia, Yu Ge, Liang Shao, Caiyun Wang, Gordon G. Wallace
Tunable Conducting Polymers: Toward Sustainable And Versatile Batteries, Xiaoteng Jia, Yu Ge, Liang Shao, Caiyun Wang, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Rapid growth of smart electronics and implantable medical devices markets has driven the development of next-generation sustainable, flexible, or implantable batteries. Conducting polymers with unique mechanical and electronic properties offer new possibilities and have attracted great attention. In this review, we discuss approaches used to tune conducting polymers at the molecular level for designated properties and applications such as improved electrochemical performance, and we discuss approaches used to tune conducting polymers at the molecular level to enhance selected properties for applications such as lithium/sodium ion batteries, biodegradable electrodes or enhanced solution processability for advanced manufacture of such structures. We provide …
Computer-Aided Manufacturing And Focused Ion Beam Technology Enable Machining Of Complex Micro- And Nano-Structures, Frank Niessen, Mitchell John Bromley Nancarrow
Computer-Aided Manufacturing And Focused Ion Beam Technology Enable Machining Of Complex Micro- And Nano-Structures, Frank Niessen, Mitchell John Bromley Nancarrow
Australian Institute for Innovative Materials - Papers
We present a novel framework for the fabrication of geometrically complex structures at the micro- and nano-scale which relies on the synergy of integrated computer-aided design and manufacturing systems (CAD/CAM) and focused ion beam (FIB) technology in a scanning electron microscope. Here we utilise industry standard G-code syntax, for the first time, to FIB machining by designing geometries with CAD, defining machining strategies and exporting G-codes with CAM and generating a coordinate list-based beam path by using a custom-built interpreter program. This allows the fabrication of complex structures from CAD models using syntax which is readily understood in the general …
Electrical Properties Of Yttrium Calcium Oxyborate Crystal Annealed At High Temperature And Low Oxygen Partial Pressure, Shiwei Tian, Lili Li, Feifei Chen, Chao Jiang, Fapeng Yu, Yanlu Li, Xiulan Duan, Zhengping Wang, Shujun Zhang, Xian Zhao
Electrical Properties Of Yttrium Calcium Oxyborate Crystal Annealed At High Temperature And Low Oxygen Partial Pressure, Shiwei Tian, Lili Li, Feifei Chen, Chao Jiang, Fapeng Yu, Yanlu Li, Xiulan Duan, Zhengping Wang, Shujun Zhang, Xian Zhao
Australian Institute for Innovative Materials - Papers
The yttrium calcium oxyborate crystal (YCa 4 O(BO 3 ) 3 , YCOB) has been actively studied for high-temperature piezoelectric sensing applications. In this work, the stability of electric properties of YCOB crystal annealed in critical conditions (high-temperatures of 900-1100 °C with a low oxygen partial pressure of 4 x 10 −6 atm for 24 h) was investigated and the recovery mechanism for the electrical resisitivity, dielectric permittivity and dielectric loss were studied, taking advantage of the X-ray photoelectron spectra and the first principle calculations. The electrical resistivity of the annealed YCOB crystal was slightly decreased when compared to the …
(Bi0.51 Na0.47)Tio3 Based Lead Free Ceramics With High Energy Density And Efficiency, Yu Huang, Fei Li, Hua Hao, Fangquan Xia, Hanxing Liu, Shujun Zhang
(Bi0.51 Na0.47)Tio3 Based Lead Free Ceramics With High Energy Density And Efficiency, Yu Huang, Fei Li, Hua Hao, Fangquan Xia, Hanxing Liu, Shujun Zhang
Australian Institute for Innovative Materials - Papers
Dielectric ceramics with high energy storage density and energy efficiency play an important role in high power energy storage applications. In this work, lead free relaxor ferroelectric ceramics in (1-x)Bi 0.51 Na 0.47 TiO 3 - xBa(Zr 0.3 Ti 0.7 )O 3 (BNT-BZT100x: x = 0.20, 0.30, 0.40 and 0.50) system are fabricated by conventional solid-state sintering method. The BNT-BZT100x ceramics are sintered dense with minimal pores, exhibiting pseudocubic symmetry and strong relaxor characteristic. A high energy storage density of 3.1 J/cm 3 and high energy efficiency of 91% are simultaneously achieved in BNT-BZT40 ceramic with 0.1 mm in thickness, …
Smart Machine Learning Or Discovering Meaningful Physical And Chemical Contributions Through Dimensional Stacking, Lee Griffin, Iaroslav Gaponenko, Shujun Zhang, Nazanin Bassiri-Gharb
Smart Machine Learning Or Discovering Meaningful Physical And Chemical Contributions Through Dimensional Stacking, Lee Griffin, Iaroslav Gaponenko, Shujun Zhang, Nazanin Bassiri-Gharb
Australian Institute for Innovative Materials - Papers
Despite remarkable advances in characterization techniques of functional materials yielding an ever growing amount of data, the interplay between the physical and chemical phenomena underpinning materials' functionalities is still often poorly understood. Dimensional reduction techniques have been used to tackle the challenge of understanding materials' behavior, leveraging the very large amount of data available. Here, we present a method for applying physical and chemical constraints to dimensional reduction analysis, through dimensional stacking. Compared to traditional, uncorrelated techniques, this approach enables a direct and simultaneous assessment of behaviors across all measurement parameters, through stacking of data along specific dimensions as required …
Phase Evolution In Calcium Molybdate Nanoparticles As A Function Of Synthesis Temperature And Its Electrochemical Effect On Energy Storage, Manickam Minakshi, David R. G Mitchell, Christian Baur, Johann Chable, Anders Barlow, Maximilian Fichtner, Amitava Banerjee, Sudip Chakraborty, Rajeev Ahuja
Phase Evolution In Calcium Molybdate Nanoparticles As A Function Of Synthesis Temperature And Its Electrochemical Effect On Energy Storage, Manickam Minakshi, David R. G Mitchell, Christian Baur, Johann Chable, Anders Barlow, Maximilian Fichtner, Amitava Banerjee, Sudip Chakraborty, Rajeev Ahuja
Australian Institute for Innovative Materials - Papers
The design of a suitable electrode is an essential and fundamental research challenge in the field of electrochemical energy storage because the electronic structures and morphologies determine the surface redox reactions. Calcium molybdate (CaMoO4) was synthesized by a combustion route at 300 C and 500 C. We describe new findings on the behaviour of CaMoO4 and evaluate the influence of crystallinity on energy storage performance. A wide range of characterization techniques was used to obtain detailed information about the physical and morphological characteristics of CaMoO4. The characterization results enable the phase evolution as a function of the electrode synthesis temperature …
Insight Of A Phase Compatible Surface Coating For Long-Durable Li-Rich Layered Oxide Cathode, Sijiang Hu, Yu Li, Yuhua Chen, Jiming Peng, Tengfei Zhou, Wei Kong Pang, Christophe R. Didier, Vanessa K. Peterson, Hongqiang Wang, Qingyu Li, Zaiping Guo
Insight Of A Phase Compatible Surface Coating For Long-Durable Li-Rich Layered Oxide Cathode, Sijiang Hu, Yu Li, Yuhua Chen, Jiming Peng, Tengfei Zhou, Wei Kong Pang, Christophe R. Didier, Vanessa K. Peterson, Hongqiang Wang, Qingyu Li, Zaiping Guo
Australian Institute for Innovative Materials - Papers
Li-rich layered oxides (LLOs) can deliver almost double the capacity of conventional electrode materials such as LiCoO2 and LiMn2O4; however, voltage fade and capacity degradation are major obstacles to the practical implementation of LLOs in high-energy lithium-ion batteries. Herein, hexagonal La0.8Sr0.2MnO3−y (LSM) is used as a protective and phase-compatible surface layer to stabilize the Li-rich layered Li1.2Ni0.13Co0.13Mn0.54O2 (LM) cathode material. The LSM is MnOMbonded at the LSM/LM interface and functions by preventing the migration of metal ions in the LM associated with capacity degradation as well as enhancing the electrical transfer and ionic conductivity at the interface. The LSM-coated LM …
A New Class Of Bubble-Free Water Electrolyzer That Is Intrinsically Highly Efficient, Prerna Tiwari, George Tsekouras, Klaudia K. Wagner, Gerhard F. Swiegers, Gordon G. Wallace
A New Class Of Bubble-Free Water Electrolyzer That Is Intrinsically Highly Efficient, Prerna Tiwari, George Tsekouras, Klaudia K. Wagner, Gerhard F. Swiegers, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
A new class of 'bubble-free' alkaline electrolyzer with electrodes comprising of PTFE-based Gortex gas diffusion layers coated with catalysts, is described (PTFE = poly(tetrafluoroethylene)). At ≥80 °C (Eocell 1.18 V), the electrolyzers displayed the lowest cell onset potentials (≥1.28 V) yet reported, indicating that they exhibit the highest-known intrinsic efficiency when the influence of impedance is stripped out. The overpotentials at each electrode, particularly the oxygen-generating anode, were significantly diminished by the presence of the porous Gortex substrate, which exhibited a powerful 'gas-philic' capillary action (6.3 bar capillary pressure). The bubble-free process arose from preferential coalescence of newly-formed gases on …
Zn-Doped Cu(100) Facet With Efficient Catalytic Ability For The Co2 Electroreduction To Ethylene, Yuefeng Zhang, Yong Zhao, Caiyun Wang, Zengxi Wei, Junliang Yang, Jianmin Ma
Zn-Doped Cu(100) Facet With Efficient Catalytic Ability For The Co2 Electroreduction To Ethylene, Yuefeng Zhang, Yong Zhao, Caiyun Wang, Zengxi Wei, Junliang Yang, Jianmin Ma
Australian Institute for Innovative Materials - Papers
Electrochemically converting CO2 into fuels and chemicals is an appealing strategy to create energy rich products. The highly demanded product ethylene has been preferably produced on Cu-based catalysts with abundant exposed Cu(100) facets. However, the performance is still limited by the large energy barrier for the C-C dimerization. Here, to lower the energy barrier, we tailor the electronic structure of Cu(100) by doping a series of transition metals using the density functional theory (DFT) method. The zinc-doped Cu(100) surface has shown a superior catalytic performance. Mechanistic study further reveals that doping with Zn alters the electronic structure around Cu, adjusts …
Niobium-Titanium (Nb-Ti) Superconducting Joints For Persistent-Mode Operation, Dipakkumar Patel, Su Hun Kim, Wenbin Qiu, Minoru Maeda, Akiyoshi Matsumoto, Gen Nishijima, Hiroaki Kumakura, Seyong Choi, Jung Ho Kim
Niobium-Titanium (Nb-Ti) Superconducting Joints For Persistent-Mode Operation, Dipakkumar Patel, Su Hun Kim, Wenbin Qiu, Minoru Maeda, Akiyoshi Matsumoto, Gen Nishijima, Hiroaki Kumakura, Seyong Choi, Jung Ho Kim
Australian Institute for Innovative Materials - Papers
Superconducting joints are essential for persistent-mode operation in a superconducting magnet system to produce an ultra-stable magnetic field. Herein, we report rationally designed niobium-titanium (Nb-Ti) superconducting joints and their evaluation results in detail. For practical applications, superconducting joints were fabricated by using a solder matrix replacement method with two types of lead-bismuth (Pb-Bi) solder, including Pb42Bi58 as a new composition. All the joints attained a critical current of >200 A below 1.43 T at 4.2 K. Our optimized superconducting joining method was tested in a closed-loop coil, obtaining a total circuit resistance of 3.25 x 10-14 Ω at 4.2 K …
Recent Advances In Isolated Single-Atom Catalysts For Zinc Air Batteries: A Focus Review, Weimin Zhang, Yuqing Liu, Lipeng Zhang, Jun Chen
Recent Advances In Isolated Single-Atom Catalysts For Zinc Air Batteries: A Focus Review, Weimin Zhang, Yuqing Liu, Lipeng Zhang, Jun Chen
Australian Institute for Innovative Materials - Papers
Recently, zinc-air batteries (ZABs) have been receiving attention due to their theoretically high energy density, excellent safety, and the abundance of zinc resources. Typically, the performance of the zinc air batteries is determined by two catalytic reactions on the cathode-the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER). Therefore, intensive effort has been devoted to explore high performance electrocatalysts with desired morphology, size, and composition. Among them, single-atom catalysts (SACs) have emerged as attractive and unique systems because of their high electrocatalytic activity, good durability, and 100% active atom utilization. In this review, we mainly focus on the …
Electric Field Effect On Short-Range Polar Order In A Relaxor Ferroelectric System, Zhijun Xu, Fei Li, Shujun Zhang, Christopher Stock, Jun Luo, Peter Gehring, Guangyong Xu
Electric Field Effect On Short-Range Polar Order In A Relaxor Ferroelectric System, Zhijun Xu, Fei Li, Shujun Zhang, Christopher Stock, Jun Luo, Peter Gehring, Guangyong Xu
Australian Institute for Innovative Materials - Papers
Short-range polar order in the relaxor ferroelectric material PbMg1/3Nb2/3O3-28%PbTiO3 (PMN-28PT) have been studied using neutron diffuse scattering. An external electric field along the [110] direction can affect the diffuse scattering in the low temperature rhombohedral/monoclinic phase. Diffuse scattering intensities associated with [110] short-range polarizations are partially suppressed, while those arising from [110] polarizations are enhanced. On the other hand, short-range polar order along other equivalent (110) directions, i.e., [101], [101], [011], and [011] directions, are virtually unaffected by the field. Our results, combined with previous work, strongly suggest that most parts of short-range polar order in PMN-xPT relaxor systems are …
Facile Development Of A Fiber-Based Electrode For Highly Selective And Sensitive Detection Of Dopamine, Syamak Farajikhah, Peter C. Innis, Brett Paull, Gordon G. Wallace, Alexander R. Harris
Facile Development Of A Fiber-Based Electrode For Highly Selective And Sensitive Detection Of Dopamine, Syamak Farajikhah, Peter C. Innis, Brett Paull, Gordon G. Wallace, Alexander R. Harris
Australian Institute for Innovative Materials - Papers
A facile one-step method was used to create a selective and sensitive electrode for dopamine (DA) detection based upon a stainless steel (SS) filament substrate and reduced graphene oxide (rGO). The electrode successfully and selectively detects DA in the presence of uric acid and ascorbic acid without the need of a Nafion coating. The proposed electrode is easy to fabricate, low-cost, flexible and strong. The rGO-SS electrode could also be incorporated into a 3-dimensional braided structure enabling DA detection in a two-electrode fibre system. The sensor is an excellent candidate for production of affordable, robust and flexible wearable and portable …
Layer-By-Layer: The Case For 3d Bioprinting Neurons To Create Patient-Specific Epilepsy Models, Natasha Antill-O'Brien, Justin L. Bourke, Cathal D. O'Connell
Layer-By-Layer: The Case For 3d Bioprinting Neurons To Create Patient-Specific Epilepsy Models, Natasha Antill-O'Brien, Justin L. Bourke, Cathal D. O'Connell
Australian Institute for Innovative Materials - Papers
The ability to create three-dimensional (3D) models of brain tissue from patient-derived cells, would open new possibilities in studying the neuropathology of disorders such as epilepsy and schizophrenia. While organoid culture has provided impressive examples of patient-specific models, the generation of organised 3D structures remains a challenge. 3D bioprinting is a rapidly developing technology where living cells, encapsulated in suitable bioink matrices, are printed to form 3D structures. 3D bioprinting may provide the capability to organise neuronal populations in 3D, through layer-by-layer deposition, and thereby recapitulate the complexity of neural tissue. However, printing neuron cells raises particular challenges since the …
Nickel Sulfide Nanocrystals On Nitrogen-Doped Porous Carbon Nanotubes With High-Efficiency Electrocatalysis For Room-Temperature Sodium-Sulfur Batteries, Zichao Yan, Jin Xiao, Weihong Lai, Li Wang, Florian Arno Gebert, Yunxiao Wang, Qinfen Gu, Hui Liu, Shulei Chou, Hua-Kun Liu, Shi Xue Dou
Nickel Sulfide Nanocrystals On Nitrogen-Doped Porous Carbon Nanotubes With High-Efficiency Electrocatalysis For Room-Temperature Sodium-Sulfur Batteries, Zichao Yan, Jin Xiao, Weihong Lai, Li Wang, Florian Arno Gebert, Yunxiao Wang, Qinfen Gu, Hui Liu, Shulei Chou, Hua-Kun Liu, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
Polysulfide dissolution and slow electrochemical kinetics of conversion reactions lead to low utilization of sulfur cathodes that inhibits further development of room-temperature sodium-sulfur batteries. Here we report a multifunctional sulfur host, NiS2 nanocrystals implanted in nitrogen-doped porous carbon nanotubes, which is rationally designed to achieve high polysulfide immobilization and conversion. Attributable to the synergetic effect of physical confinement and chemical bonding, the high electronic conductivity of the matrix, closed porous structure, and polarized additives of the multifunctional sulfur host effectively immobilize polysulfides. Significantly, the electrocatalytic behaviors of the Lewis base matrix and the NiS2 component are clearly evidenced by operando …
R3c-Type Lnnio3 (Ln = La, Ce, Nd, Pm, Gd, Tb, Dy, Ho, Er, Lu) Half-Metals With Multiple Dirac Cones: A Potential Class Of Advanced Spintronic Materials, Xiaotian Wang, Guangqian Ding, Zhenxiang Cheng, Hongkuan Yuan, Xiaolin Wang, Tie Yang, Rabah Khenata, Wenhong Wang
R3c-Type Lnnio3 (Ln = La, Ce, Nd, Pm, Gd, Tb, Dy, Ho, Er, Lu) Half-Metals With Multiple Dirac Cones: A Potential Class Of Advanced Spintronic Materials, Xiaotian Wang, Guangqian Ding, Zhenxiang Cheng, Hongkuan Yuan, Xiaolin Wang, Tie Yang, Rabah Khenata, Wenhong Wang
Australian Institute for Innovative Materials - Papers
In the past three years, Dirac half-metals (DHMs) have attracted considerable attention and become a high-profile topic in spintronics becuase of their excellent physical properties such as 100% spin polarization and massless Dirac fermions. Two-dimensional DHMs proposed recently have not yet been experimentally synthesized and thus remain theoretical. As a result, their characteristics cannot be experimentally confirmed. In addition, many theoretically predicted Dirac materials have only a single cone, resulting in a nonlinear electromagnetic response with insufficient intensity and inadequate transport carrier efficiency near the Fermi level. Therefore, after several attempts, we have focused on a novel class of DHMs …
Kinking Effects And Transport Properties Of Coaxial Bn-C Nanotubes As Revealed By In Situ Transmission Electron Microscopy And Theoretical Analysis, Xin Zhou, Dmitry Kvashnin, Yanming Xue, Dai-Ming Tang, Ovidiu Cretu, Masanori Mitome, Yoshio Bando, Pavel Sorokin, Takayoshi Sasaki, Dmitri Golberg
Kinking Effects And Transport Properties Of Coaxial Bn-C Nanotubes As Revealed By In Situ Transmission Electron Microscopy And Theoretical Analysis, Xin Zhou, Dmitry Kvashnin, Yanming Xue, Dai-Ming Tang, Ovidiu Cretu, Masanori Mitome, Yoshio Bando, Pavel Sorokin, Takayoshi Sasaki, Dmitri Golberg
Australian Institute for Innovative Materials - Papers
The insights into transport behavior and the effects of bending on heterostructures constructed from boron nitride (BN) and carbon (C) nanotubes are important for their flexible device applications because the two systems have equally excellent mechanical but completely different electrical properties. In this work, coaxial BN-C nanotubes have been fabricated and their intrinsic transport properties, as well as structural and electrical response to bending deformation, are studied inside a high-resolution transmission electron microscope. Ballistic, diffusive, and hopping transports within different tube length ranges have been observed. When bending deformation was applied to the tubes, although severe kinking becomes apparent, their …
Surface Stabilization Of O3-Type Layered Oxide Cathode To Protect The Anode Of Sodium Ion Batteries For Superior Lifespan, Qi Zhang, Qinfen Gu, Yang Li, Haining Fan, Wenbin Luo, Hua-Kun Liu, Shi Xue Dou
Surface Stabilization Of O3-Type Layered Oxide Cathode To Protect The Anode Of Sodium Ion Batteries For Superior Lifespan, Qi Zhang, Qinfen Gu, Yang Li, Haining Fan, Wenbin Luo, Hua-Kun Liu, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
Even though the energy density of O3-type layer-structured metal oxide cathode can fully reach the requirement for large-scale energy storage systems, the cycling lifespan still cannot meet the demand for practical application once it is coupled with a non-sodium-metal anode in full-cell system. Transition metal dissolution into the electrolyte occurs along with continuous phase transformation and accelerates deterioration of the crystal structure, followed by migration and finally deposition on the anode to form a vicious circle. Surface engineering techniques are employed to modify the interface between active materials and the electrolyte by coating them with a thin layer of AlPO4 …
Enhancement Of Thermoelectric Properties Of La-Doped Srtio3 Bulk By Introducing Nanoscale Porosity, Al Jumlat Ahmed, Sheik Md Kazi Nazrul Islam, Ridwone Hossain, Jeonghun Kim, Minjun Kim, Md Motasim Billah, Md. Shahriar Al Hossain, Yusuke Yamauchi, Xiaolin Wang
Enhancement Of Thermoelectric Properties Of La-Doped Srtio3 Bulk By Introducing Nanoscale Porosity, Al Jumlat Ahmed, Sheik Md Kazi Nazrul Islam, Ridwone Hossain, Jeonghun Kim, Minjun Kim, Md Motasim Billah, Md. Shahriar Al Hossain, Yusuke Yamauchi, Xiaolin Wang
Australian Institute for Innovative Materials - Papers
Electron-doped SrTiO3 is a well-known n-type thermoelectric material, although the figure of merit of SrTiO3 is still inferior compared with p-type metal oxide-based thermoelectric materials due to its high lattice thermal conductivity. In this study, we have used a different amount of the non-ionic surfactant F127 during sample preparation to introduce nanoscale porosities into bulk samples of La-doped SrTiO3. It has been observed that the porosities introduced into the bulk sample significantly improve the Seebeck coefficient and reduce the thermal conductivity by the charge carrier and phonon scattering respectively. Therefore, there is an overall enhancement in the power factor (PF) …
Fabrication Of Hierarchically One-Dimensional Znxcd1-Xs/Nitio3 Nanostructures And Their Enhanced Photocatalytic Water Splitting Activity, Ling Wang, Guorui Yang, Silan Wang, Jianan Wang, Muhammad Salman Nasir, Caiyun Wang, Shengjie Peng, Wei Yan, Seeram Ramakrishna
Fabrication Of Hierarchically One-Dimensional Znxcd1-Xs/Nitio3 Nanostructures And Their Enhanced Photocatalytic Water Splitting Activity, Ling Wang, Guorui Yang, Silan Wang, Jianan Wang, Muhammad Salman Nasir, Caiyun Wang, Shengjie Peng, Wei Yan, Seeram Ramakrishna
Australian Institute for Innovative Materials - Papers
Hierarchically one-dimensional nanomaterials represent a kind of promising catalyst for photocatalytic of hydrogen generation, where the photoinduced charge carriers can effectively separate and be engaged in the target reaction. Herein, we report the synthesis of hierarchically one-dimensional ZnxCd1-xS/NiTiO3 nanofibers and the investigations of their photocatalytic performance. These well-designed nanofibers demonstrate a typically one-dimensional heterostructure with an excellent continuity, and the element mapping, X-ray diffraction, and X-ray photoelectron spectroscopy collectively confirm the ZnxCd1-xS nanoparticles being decorated on the surface of NiTiO3 nanofibers successfully. The ZnxCd1-xS/NiTiO3 nanofibers exhibit enhanced efficiency in photocatalytic hydrogen production under visible light, compared with the ZnxCd1-xS/TiO2 nanofibers. …
Structure And Electrochemical Performance Modulation Of A Lini0.8co0.1mn0.1o2 Cathode Material By Anion And Cation Co-Doping For Lithium Ion Batteries, Rong Li, Yong Ming, Wei Xiang, Chunliu Xu, Guilin Feng, Yongchun Li, Yanxiao Chen, Zhenguo Wu, Ben-He Zhong, Xiaodong Guo
Structure And Electrochemical Performance Modulation Of A Lini0.8co0.1mn0.1o2 Cathode Material By Anion And Cation Co-Doping For Lithium Ion Batteries, Rong Li, Yong Ming, Wei Xiang, Chunliu Xu, Guilin Feng, Yongchun Li, Yanxiao Chen, Zhenguo Wu, Ben-He Zhong, Xiaodong Guo
Australian Institute for Innovative Materials - Papers
Ni-rich layered transition metal oxides show great energy density but suffer poor thermal stability and inferior cycling performance, which limit their practical application. In this work, a minor content of Co and B were co-doped into the crystal of a Ni-rich cathode (LiNi0.8Co0.1Mn0.1O2) using cobalt acetate and boric acid as dopants. The results analyzed by XRD, TEM, XPS and SEM reveal that the modified sample shows a reduced energy barrier for Li+ insertion/extraction and alleviated Li+/Ni2+ cation mixing. With the doping of B and Co, corresponding enhanced cycle stability was achieved with a high capacity retention of 86.1% at 1.0C …
Heterostructure Engineering Of A Reverse Water Gas Shift Photocatalyst, Hong Wang, Jia Jia, Lu Wang, Keith Butler, Rui Song, Gilberto Casillas, Le He, Nazir Kherani, Doug Perovic, Liqiang Jing, Aron Walsh, Roland Dittmeyer, Geoffrey A. Ozin
Heterostructure Engineering Of A Reverse Water Gas Shift Photocatalyst, Hong Wang, Jia Jia, Lu Wang, Keith Butler, Rui Song, Gilberto Casillas, Le He, Nazir Kherani, Doug Perovic, Liqiang Jing, Aron Walsh, Roland Dittmeyer, Geoffrey A. Ozin
Australian Institute for Innovative Materials - Papers
To achieve substantial reductions in CO2 emissions, catalysts for the photoreduction of CO2 into value-added chemicals and fuels will most likely be at the heart of key renewable-energy technologies. Despite tremendous efforts, developing highly active and selective CO2 reduction photocatalysts remains a great challenge. Herein, a metal oxide heterostructure engineering strategy that enables the gas-phase, photocatalytic, heterogeneous hydrogenation of CO2 to CO with high performance metrics (i.e., the conversion rate of CO2 to CO reached as high as 1400 µmol g cat−1 h−1) is reported. The catalyst is comprised of indium oxide nanocrystals, In2O3−x(OH)y, nucleated and grown on the surface …
Lotus Rhizome-Like S/N-C With Embedded Ws2 For Superior Sodium Storage, Xiu Li, Yonggang Sun, Xun Xu, Yunxiao Wang, Shulei Chou, Anmin Cao, Libao Chen, Shi Xue Dou
Lotus Rhizome-Like S/N-C With Embedded Ws2 For Superior Sodium Storage, Xiu Li, Yonggang Sun, Xun Xu, Yunxiao Wang, Shulei Chou, Anmin Cao, Libao Chen, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
Sodium-ion batteries (SIBs) hold great promise as power sources because of their low cost and decent electrochemical behavior. Nevertheless, the poor rate performance and long-term cycling capability of anode materials in SIBs still impede their practical application in smart grids and electric vehicles. Herein, we design a delicate method to embed WS2 nanosheets into lotus rhizome-like heteroatom-doped carbon nanofibers with abundant hierarchical tubes inside, forming WS2@sulfur and nitrogen-doped carbon nanofibers (WS2@S/N-C). The WS2@S/N-C nanofibers exhibit a large discharge capacity of 381 mA h g-1 at 100 mA g-1, excellent rate capacity of 108 mA h g-1 at 30 A g-1, …
Atomic-Local Environments Of Single-Atom Catalysts: Synthesis, Electronic Structure, And Activity, Weihong Lai, Zongcheng Miao, Yunxiao Wang, Jiazhao Wang, Shulei Chou
Atomic-Local Environments Of Single-Atom Catalysts: Synthesis, Electronic Structure, And Activity, Weihong Lai, Zongcheng Miao, Yunxiao Wang, Jiazhao Wang, Shulei Chou
Australian Institute for Innovative Materials - Papers
Single-atom catalysts (SACs) hold great promise for maximizing atomic efficiency of supported metals via the ultimate utilization of every single atom. The foreign isolated substitutions anchored on different supports build varieties of local structural centers, changing the physical and chemical properties. Thus, distinct atomic local environments for single-atom catalysts are essential for determining superior catalytic performance for a wide variety of chemical reactions. The examples of synthesizing single atoms on various supports presented here deepen the understanding of the different structural and electronic properties of SACs, in which the metal single atom does not bind with any other atoms of …
Fluorescent Carbon- And Oxygen-Doped Hexagonal Boron Nitride Powders As Printing Ink For Anticounterfeit Applications, Feng Liu, Andrew Nattestad, Sina Naficy, Rui Han, Gilberto Cosillas, Alexander Angeloski, Xudong Sun, Zhenguo Huang
Fluorescent Carbon- And Oxygen-Doped Hexagonal Boron Nitride Powders As Printing Ink For Anticounterfeit Applications, Feng Liu, Andrew Nattestad, Sina Naficy, Rui Han, Gilberto Cosillas, Alexander Angeloski, Xudong Sun, Zhenguo Huang
Australian Institute for Innovative Materials - Papers
Increasing demands for optical anticounterfeiting technology require the development of versatile luminescent materials with tunable photoluminescence properties. Herein, a number of fluorescent carbon- and oxygen-doped hexagonal boron nitride (denoted as BCNO) phosphors are found to offer a such high-tech anticounterfeiting solution. These multicolor BCNO powders, developed in a two-step process with controlled annealing and oxidation, feature rod-like particle shape, with varied luminescence properties. Studies of the optical properties of BCNO, along with other characterization, provide insight into this underexplored material. Anticounterfeiting applications are demonstrated with printed patterns which are indistinguishable to the naked eye under visible light but become highly …
Self-Healing Electrode With High Electrical Conductivity And Mechanical Strength For Artificial Electronic Skin, Hyeon Jun Sim, Hyunsoo Kim, Yongwoo Jang, Geoffrey M. Spinks, Sanjeev Gambhir, David L. Officer, Gordon G. Wallace, Seon Jeong Kim
Self-Healing Electrode With High Electrical Conductivity And Mechanical Strength For Artificial Electronic Skin, Hyeon Jun Sim, Hyunsoo Kim, Yongwoo Jang, Geoffrey M. Spinks, Sanjeev Gambhir, David L. Officer, Gordon G. Wallace, Seon Jeong Kim
Australian Institute for Innovative Materials - Papers
A self-healing electrode is an electrical conductor that can repair internal damage by itself, similar to human skin. Since self-healing electrodes are based on polymers and hydrogels, these components are still limited by low electrical conductivity and mechanical strength. In this study, we designed an electrically conductive, mechanically strong, and printable self-healing electrode using liquid crystal graphene oxide (LCGO) and silver nanowires (AgNWs). The conductive ink was easily prepared by simply mixing LCGO and AgNWs solutions. The ultrathin (3 μm thick) electrode can be printed in various shapes, such as a butterfly, in a freestanding state. The maximum conductivity and …
Li2s-Based Li-Ion Sulfur Batteries: Progress And Prospects, Jicheng Jiang, Qining Fan, Shulei Chou, Zaiping Guo, Konstantin K. Konstantinov, Hua-Kun Liu, Jiazhao Wang
Li2s-Based Li-Ion Sulfur Batteries: Progress And Prospects, Jicheng Jiang, Qining Fan, Shulei Chou, Zaiping Guo, Konstantin K. Konstantinov, Hua-Kun Liu, Jiazhao Wang
Australian Institute for Innovative Materials - Papers
The great demand for high-energy-density batteries has driven intensive research on the Li–S battery due to its high theoretical energy density. Consequently, considerable progress in Li–S batteries is achieved, although the lithium anode material is still challenging in terms of lithium dendrites and its unstable interface with electrolyte, impeding the practical application of the Li–S battery. Li2S-based Li-ion sulfur batteries (LISBs), which employ lithium-metal-free anodes, are a convenient and effective way to avoid the use of lithium metal for the realization of practical Li–S batteries. Over the past decade, studies on LISBs are carried out to optimize their performance. Herein, …
Carbon Nanotube Yarn For Fiber-Shaped Electrical Sensors, Actuators, And Energy Storage For Smart Systems, Yongwoo Jang, Sung Min Kim, Geoffrey M. Spinks, Seon Jeong Kim
Carbon Nanotube Yarn For Fiber-Shaped Electrical Sensors, Actuators, And Energy Storage For Smart Systems, Yongwoo Jang, Sung Min Kim, Geoffrey M. Spinks, Seon Jeong Kim
Australian Institute for Innovative Materials - Papers
Smart systems are those that display autonomous or collaborative functionalities, and include the ability to sense multiple inputs, to respond with appropriate operations, and to control a given situation. In certain circumstances, it is also of great interest to retain flexible, stretchable, portable, wearable, and/or implantable attributes in smart electronic systems. Among the promising candidate smart materials, carbon nanotubes (CNTs) exhibit excellent electrical and mechanical properties, and structurally fabricated CNT-based fibers and yarns with coil and twist further introduce flexible and stretchable properties. A number of notable studies have demonstrated various functions of CNT yarns, including sensors, actuators, and energy …
Designed Patterning Of Mesoporous Metal Films Based On Electrochemical Micelle Assembly Combined With Lithographical Techniques, Hyunsoo Lim, Jeonghun Kim, Kenya Kani, Mostafa Kamal Masud, Hyeongyu Park, Minjun Kim, Saad Alsheri, Tansir Ahamad, Norah Alhokbany, Jongbeom Na, Victor Malgras, Yoshio Bando, Yusuke Yamauchi
Designed Patterning Of Mesoporous Metal Films Based On Electrochemical Micelle Assembly Combined With Lithographical Techniques, Hyunsoo Lim, Jeonghun Kim, Kenya Kani, Mostafa Kamal Masud, Hyeongyu Park, Minjun Kim, Saad Alsheri, Tansir Ahamad, Norah Alhokbany, Jongbeom Na, Victor Malgras, Yoshio Bando, Yusuke Yamauchi
Australian Institute for Innovative Materials - Papers
Mesoporous noble metals and their patterning techniques for obtaining unique patterned structures are highly attractive for electrocatalysis, photocatalysis, and optoelectronics device applications owing to their expedient properties such as high level of exposed active locations, cascade electrocatalytic sites, and large surface area. However, patterning techniques for mesoporous substrates are still limited to metal oxide and silica films, although there is growing demand for developing techniques related to patterning mesoporous metals. In this study, the first demonstration of mesoporous metal films on patterned gold (Au) substrates, prefabricated using photolithographic techniques, is reported. First, different growth rates of mesoporous Au metal films …