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Articles 31 - 60 of 174
Full-Text Articles in Engineering
Plasma Functionalisation Of Few-Layer Graphenes And Carbon Nanotubes For Graphene Microsupercapacitors, Emily Smith, Yuqing Liu, Chris Stirling, David J. Watson, Robert C.T. Slade, Jun Chen, Carol Crean
Plasma Functionalisation Of Few-Layer Graphenes And Carbon Nanotubes For Graphene Microsupercapacitors, Emily Smith, Yuqing Liu, Chris Stirling, David J. Watson, Robert C.T. Slade, Jun Chen, Carol Crean
Australian Institute for Innovative Materials - Papers
Plasma processing, as a commercial and large-scale technology, was used to functionalize few-layer graphene (FLG) and multi-walled carbon nanotubes (MWCNT). The successful functionalities of FLG and MWCNT have been confirmed by elemental microanalysis, X-ray photoelectron spectroscopy, acid-base titration and zeta potential measurements. With the assistance of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT/PSS), a water-dispersible and conductive polymer, a composite of functionalized FLG and MWCNT was fabricated into large-size flexible films and also interdigitated microelectrodes for microsupercapacitor application via simple and scalable techniques (i.e. doctor blading and laser-etching). When normalised by volume and area, the devices made from FLG(NH3)-MWCNT(Acid) (19.9 F cm−3 at 5 mV …
New Insights Into The Relationship Between Draw Solution Chemistry And Trace Organic Rejection By Forward Osmosis, Lei Zheng, William E. Price, James A. Mcdonald, Stuart J. Khan, Takahiro Fujioka, Long D. Nghiem
New Insights Into The Relationship Between Draw Solution Chemistry And Trace Organic Rejection By Forward Osmosis, Lei Zheng, William E. Price, James A. Mcdonald, Stuart J. Khan, Takahiro Fujioka, Long D. Nghiem
Australian Institute for Innovative Materials - Papers
This study elucidates the impact of draw solution chemistry (in terms of pH and draw solute species) and membrane fouling on water flux and the rejection of trace organic contaminants by forward osmosis. The results show that draw solution chemistry could induce a notable impact on both water flux and TrOCs rejection. In addition, the impact was further influenced by membrane fouling. The reverse flux of proton (or hydroxyl) could alter the feed solution pH, which governed the separation of ionisable TrOCs. In addition, charged compounds generally exhibited higher rejections than neutral ones by the clean membrane. Electrostatic interaction, rather …
Flexible And Free-Standing Siox/Cnt Compositefilms For High Capacityand Durable Lithium Ion Batteries, Wenlei Guo, Xiao Yan, Feng Hou, Lei Wen, Yejing Dai, Deming Yang, Xiaotong Jiang, Jian Liu, Ji Liang, Shi Xue Dou
Flexible And Free-Standing Siox/Cnt Compositefilms For High Capacityand Durable Lithium Ion Batteries, Wenlei Guo, Xiao Yan, Feng Hou, Lei Wen, Yejing Dai, Deming Yang, Xiaotong Jiang, Jian Liu, Ji Liang, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
Flexible and free-standing electrode materials are prerequisite and key components for next-generation flexible energy storage and conversion devices. However, it is still a chanllenge to fabricate these materials from a continuous, straightforward, and facile method. Herein, we report a flexible composite film with silicon oxides decorated on few-walled carbon nanotubes, which can be continuously fabricated and directly drawn from the hot zone of the reactor. The composite film can be readily used for electrochemical lithium ion storage with high and reversible specific capacity, good rate capability, and excellent cycling performance. These exceptional characteristics make it very promising for flexible energy …
Insights Into The Electron Transfer Kinetics, Capacitance And Resistance Effects Of Implantable Electrodes Using Fourier Transform Ac Voltammetry On Platinum, Alexander R. Harris, Carrie Newbold, Robert Cowan, Gordon G. Wallace
Insights Into The Electron Transfer Kinetics, Capacitance And Resistance Effects Of Implantable Electrodes Using Fourier Transform Ac Voltammetry On Platinum, Alexander R. Harris, Carrie Newbold, Robert Cowan, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
The charge transfer mechanism at the electrode-solution interface was assessed by Fourier transform AC voltammetry (FTACV). The faradaic reactions that occur within the safe potential window on platinum had slow electron transfer kinetics. The charge transfer mechanisms during short chronopotentiometric stimulation of cells, is most likely dominated by capacitance. Impedance was modelled with a single time constant. FTACV was fit with a 2-component equivalent circuit comprising a series capacitor and resistor. Capacitance and resistance varied with electrode potential, area, topography, surface functionality and solution composition. Capacitance correlated with charge storage capacity measured by voltammetry. Increased capacitance reduced the change in …
Chemical Properties, Structural Properties, And Energy Storage Applications Of Prussian Blue Analogues, Weijie Li, Chao Han, Gang Cheng, Shulei Chou, Hua-Kun Liu, Shi Xue Dou
Chemical Properties, Structural Properties, And Energy Storage Applications Of Prussian Blue Analogues, Weijie Li, Chao Han, Gang Cheng, Shulei Chou, Hua-Kun Liu, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
Prussian blue analogues (PBAs, A 2 T[M(CN) 6 ], A = Li, K, Na; T = Fe, Co, Ni, Mn, Cu, etc.; M = Fe, Mn, Co, etc.) are a large family of materials with an open framework structure. In recent years, they have been intensively investigated as active materials in the field of energy conversion and storage, such as for alkaline-ion batteries (lithium-ion, LIBs; sodium-ion, NIB; and potassium-ion, KIBs), and as electrochemical catalysts. Nevertheless, few review papers have focused on the intrinsic chemical and structural properties of Prussian blue (PB) and its analogues. In this Review, a comprehensive insight …
Low-Coordinate Iridium Oxide Confined On Graphitic Carbon Nitride For Highly Efficient Oxygen Evolution, Jiayi Chen, Peixin Cui, Guoqiang Zhao, Kun Rui, Mengmeng Lao, Yaping Chen, Xusheng Zheng, Yinzhu Jiang, Hongge Pan, Shi Xue Dou, Wenping Sun
Low-Coordinate Iridium Oxide Confined On Graphitic Carbon Nitride For Highly Efficient Oxygen Evolution, Jiayi Chen, Peixin Cui, Guoqiang Zhao, Kun Rui, Mengmeng Lao, Yaping Chen, Xusheng Zheng, Yinzhu Jiang, Hongge Pan, Shi Xue Dou, Wenping Sun
Australian Institute for Innovative Materials - Papers
Highly active and durable electrocatalysts for the oxygen evolution reaction (OER) is greatly desired. Iridium oxide/graphitic carbon nitride (IrO2/GCN) heterostructures are designed with low-coordinate IrO2 nanoparticles (NPs) confined on superhydrophilic highly stable GCN nanosheets for efficient acidic OER. The GCN nanosheets not only ensure the homogeneous distribution and confinement of IrO2 NPs but also endows the heterostructured catalyst system with a superhydrophilic surface, which can maximize the exposure of active sites and promotes mass diffusion. The coordination number of Ir atoms is decreased owing to the strong interaction between IrO2 and GCN, leading to lattice strain and increment of electron …
In Situ Fabrication Of Branched Tio2/C Nanofibers As Binder‐Free And Free‐Standing Anodes For High‐Performance Sodium‐Ion Batteries, Ling Wang, Guorui Yang, Jianan Wang, Silan Wang, Caiyun Wang, Shengjie Peng, Wei Yan, Seeram Ramakrishna
In Situ Fabrication Of Branched Tio2/C Nanofibers As Binder‐Free And Free‐Standing Anodes For High‐Performance Sodium‐Ion Batteries, Ling Wang, Guorui Yang, Jianan Wang, Silan Wang, Caiyun Wang, Shengjie Peng, Wei Yan, Seeram Ramakrishna
Australian Institute for Innovative Materials - Papers
Herein, 1D free-standing and binder-free hierarchically branched TiO2/C nanofibers (denoted as BT/C NFs) based on an in situ fabrication method as an anode for sodium-ion batteries are reported. The in situ fabrication endows this material with large surface area and strong structural stability, providing this material with abundant active sites and smooth channels for fast ion transportation. As a result, BT/C NFs with the character of free-standing membranes are directly used as binder-free anode for sodium-ion batteries, delivering a capacity of 284 mA h g−1 at a current density of 200 mA g−1 after 1000 cycles. Even at a high …
A 3d-Printed Electrochemical Water Splitting Cell, Chong Yong Lee, Adam Taylor, Stephen T. Beirne, Gordon G. Wallace
A 3d-Printed Electrochemical Water Splitting Cell, Chong Yong Lee, Adam Taylor, Stephen T. Beirne, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
3D printing offers an attractive approach in fabricating complex designs across a wide range of materials to meet the functional requirements of targeted applications. In this study, the surface-patterned metallic electrodes are printed and integrated with custom built reaction vessels produced via a polymer-based 3D printing approach to create a complete electrochemical cell. It is shown that metallic electrodes with conical surface structures can be printed from Ti and Ni. In addition to conventional flat electrodes, the design can be tailor-made to any desirable geometry such as a curved structure. The transformation of inactive Ti electrodes with the deposition of …
Oxygen Vacancies Promoting The Electrocatalytic Performance Of Ceo 2 Nanorods As Cathode Materials For Li-O 2 Batteries, Yue Hou, Jun Wang, Chuanxin Hou, Yuqi Fan, Yanjie Zhai, Hongyu Li, Feng Dang, Shulei Chou
Oxygen Vacancies Promoting The Electrocatalytic Performance Of Ceo 2 Nanorods As Cathode Materials For Li-O 2 Batteries, Yue Hou, Jun Wang, Chuanxin Hou, Yuqi Fan, Yanjie Zhai, Hongyu Li, Feng Dang, Shulei Chou
Australian Institute for Innovative Materials - Papers
Li-O 2 batteries have become very promising power sources for electronic vehicles as a result of their extraordinary energy density. Nevertheless, the unfavourable electrocatalytic activity of cathode materials in Li-O 2 batteries is still a limiting factor for the practical application of Li-O 2 batteries. This study proposes a surface engineering strategy which can enhance the electrocatalytic activity of CeO 2 nanorods by tuning the oxygen vacancies on their surface, and found that the highest concentration of oxygen vacancies induces the best electrochemical performance, including an extended electrochemical stability of 200 cycles, and reduces the overpotential of the ORR from …
Nanosheets-In-Nanotube Co3o4-Carbon Array Design Enables Stable Li-Ion Storage, Dayi Guo, Lu Pan, Jianmin Hao, Limin Han, Ding Yi, Yajing Wang, Yijun Yang, Yoshio Bando, Xi Wang
Nanosheets-In-Nanotube Co3o4-Carbon Array Design Enables Stable Li-Ion Storage, Dayi Guo, Lu Pan, Jianmin Hao, Limin Han, Ding Yi, Yajing Wang, Yijun Yang, Yoshio Bando, Xi Wang
Australian Institute for Innovative Materials - Papers
Carbon composite products with different structures have been developed and used as anode for lithium-ion batteries due to the superior elasticity of carbon, which can keep the morphology integrity of the electrode materials in the process of the multiple cycles. Herein, a novel structure of nanosheets-in-nanotube Co 3 O 4 /carbon arrays is fabricated by the method of modified chemical vapor deposition (CVD). The carbon nanotube (CNT) layer acting as an outside coater can efficiently prevent the electrode from fragmentation and consequently ensure its shape integrity. The specific structure shows the ultra-stable cycle life (850 mAh g −1 after 200 …
Structural Engineering Of Hierarchical Micro‐Nanostructured Ge-C Framework By Controlling The Nucleation For Ultralong Life Li Storage, Shilin Zhang, Yang Zheng, Xuejuan Huang, Jian Hong, Bin Cao, Junnan Hao, Qining Fan, Tengfei Zhou, Zaiping Guo
Structural Engineering Of Hierarchical Micro‐Nanostructured Ge-C Framework By Controlling The Nucleation For Ultralong Life Li Storage, Shilin Zhang, Yang Zheng, Xuejuan Huang, Jian Hong, Bin Cao, Junnan Hao, Qining Fan, Tengfei Zhou, Zaiping Guo
Australian Institute for Innovative Materials - Papers
The rational design of a proper electrode structure with high energy and power densities, long cycling lifespan, and low cost still remains a significant challenge for developing advanced energy storage systems. Germanium is a highly promising anode material for high-performance lithium ion batteries due to its large specific capacity and remarkable rate capability. Nevertheless, poor cycling stability and high price significantly limit its practical application. Herein, a facile and scalable structural engineering strategy is proposed by controlling the nucleation to fabricate a unique hierarchical micro-nanostructured Ge-C framework, featuring high tap density, reduced Ge content, superb structural stability, and a 3D …
Quantum Oscillations Of Robust Topological Surface States Up To 50 K In Thick Bulk-Insulating Topological Insulator, Weiyao Zhao, Lei Chen, Zengji Yue, Zhi Li, David L. Cortie, Michael S. Fuhrer, Xiaolin Wang
Quantum Oscillations Of Robust Topological Surface States Up To 50 K In Thick Bulk-Insulating Topological Insulator, Weiyao Zhao, Lei Chen, Zengji Yue, Zhi Li, David L. Cortie, Michael S. Fuhrer, Xiaolin Wang
Australian Institute for Innovative Materials - Papers
As personal electronic devices increasingly rely on cloud computing for energy-intensive calculations, the power consumption associated with the information revolution is rapidly becoming an important environmental issue. Several approaches have been proposed to construct electronic devices with low-energy consumption. Among these, the low-dissipation surface states of topological insulators (TIs) are widely employed. To develop TI-based devices, a key factor is the maximum temperature at which the Dirac surface states dominate the transport behavior. Here, we employ Shubnikov-de Haas oscillations (SdH) as a means to study the surface state survival temperature in a high-quality vanadium doped Bi1.08Sn0.02Sb0.9Te2S single crystal system. The …
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, …
Designed Conducting Polymer Composites That Facilitate Long-Lived, Light-Driven Oxygen And Hydrogen Evolution From Water In A Photoelectrochemical Concentration Cell (Pecc), Mohammed Alsultan, Khalid Zainulabdeen, Pawel W. Wagner, Gerhard F. Swiegers, Holly Warren
Designed Conducting Polymer Composites That Facilitate Long-Lived, Light-Driven Oxygen And Hydrogen Evolution From Water In A Photoelectrochemical Concentration Cell (Pecc), Mohammed Alsultan, Khalid Zainulabdeen, Pawel W. Wagner, Gerhard F. Swiegers, Holly Warren
Australian Institute for Innovative Materials - Papers
Light-driven water-splitting to generate hydrogen and oxygen from water is typically carried out in an electrochemical cell with an external voltage greater than 1.23 V applied between the electrodes. In this work, we examined the use of a concentration/chemical bias as a means of facilitating water-splitting under light illumination without the need for such an externally applied voltage. Such a concentration bias was created by employing a pH differential in the liquid electrolytes within the O2-generating anode half-cell and the H2-generating cathode half-cell. A novel, stretchable, highly ion-conductive polyacrylamide CsCl hydrogel was developed to connect the two half-cells. The key …
Cubic Aggregates Of Zn2sno4 Nanoparticles And Their Application In Dye-Sensitized Solar Cells, Kadhim Al-Attafi, Fanar Hussein Jawdat, Hamzeh Qutaish, Patricia Y. Hayes, Amar Al-Keisy, Kyubin Shim, Yusuke Yamauchi, Shi Xue Dou, Andrew Nattestad, Jung Ho Kim
Cubic Aggregates Of Zn2sno4 Nanoparticles And Their Application In Dye-Sensitized Solar Cells, Kadhim Al-Attafi, Fanar Hussein Jawdat, Hamzeh Qutaish, Patricia Y. Hayes, Amar Al-Keisy, Kyubin Shim, Yusuke Yamauchi, Shi Xue Dou, Andrew Nattestad, Jung Ho Kim
Australian Institute for Innovative Materials - Papers
Zinc Tin Oxide (Zn2SnO4 or ZTO) has emerged as an alternate photoanode material for dye-sensitized solar cells (DSCs), as it offers some advantages as compared to Titania (TiO2). In this work, crystalline ZTO nanoparticles, formed into cubic aggregate structures were synthesised by a solvothermal reaction and employed in photoanodes of DSCs, using either a high extinction coefficient organic (D149) or an organometallic (N719) dye. These were investigated in comparison with devices based on TiO2 photoanodes, with DSCs based on ZTO|D149 showing a promising solar-to-electric conversion efficiency of 4.9%, close to that of TiO2|D149. In addition, experiments were performed using ZTO …
Manganese Based Layered Oxides With Modulated Electronic And Thermodynamic Properties For Sodium Ion Batteries, Kai Zhang, Duho Kim, Zhe Hu, Mihui Park, Gahee Noh, Yujeong Yang, Jing Zhang, Vincent Lau, Shulei Chou, Maenghyo Cho, Si-Young Choi, Yong-Mook Kang
Manganese Based Layered Oxides With Modulated Electronic And Thermodynamic Properties For Sodium Ion Batteries, Kai Zhang, Duho Kim, Zhe Hu, Mihui Park, Gahee Noh, Yujeong Yang, Jing Zhang, Vincent Lau, Shulei Chou, Maenghyo Cho, Si-Young Choi, Yong-Mook Kang
Australian Institute for Innovative Materials - Papers
Manganese based layered oxides have received increasing attention as cathode materials for sodium ion batteries due to their high theoretical capacities and good sodium ion conductivities. However, the Jahn–Teller distortion arising from the manganese (III) centers destabilizes the host structure and deteriorates the cycling life. Herein, we report that zinc-doped Na0.833[Li0.25Mn0.75]O2 can not only suppress the Jahn–Teller effect but also reduce the inherent phase separations. The reduction of manganese (III) amount in the zinc-doped sample, as predicted by first-principles calculations, has been confirmed by its high binding energies and the reduced octahedral structural …
Two-Dimensional Transition Metal Dichalcogenides In Supercapacitors And Secondary Batteries, Liangxu Lin, Wen Lei, Shaowei Zhang, Yuqing Liu, Gordon G. Wallace, Jun Chen
Two-Dimensional Transition Metal Dichalcogenides In Supercapacitors And Secondary Batteries, Liangxu Lin, Wen Lei, Shaowei Zhang, Yuqing Liu, Gordon G. Wallace, Jun Chen
Australian Institute for Innovative Materials - Papers
Supercapacitors and secondary batteries are indispensable and widely used energy storage components in modern electrical and electronic facilities/devices. However, they both suffer from different technical weaknesses which need to be thoroughly addressed to satisfy the increasing demand for clean energy technologies. For many years efforts to overcome these technical challenges have reached their practical limits, but recent progress on two dimensional (2D) materials, such as thin transition metal dichalcogenides (TMDs), has been considered more encouraging. Owing to their thin and flexible aspects, large electrochemical active surface area (EASA), high surface tunability, rich coordination sites, and both "Faradaic" and "Non-Faradaic" electrochemical …
Development Of A Coaxial 3d Printing Platform For Biofabrication Of Implantable Islet-Containing Constructs, Xiao Liu, Sarah-Sophia Carter, Max Renes, Juewan Kim, Darling Rojas-Canales, Daniella Penko, Cameron S. Angus, Stephen T. Beirne, Christopher Drogemuller, Zhilian Yue, Patrick T. Coates, Gordon G. Wallace
Development Of A Coaxial 3d Printing Platform For Biofabrication Of Implantable Islet-Containing Constructs, Xiao Liu, Sarah-Sophia Carter, Max Renes, Juewan Kim, Darling Rojas-Canales, Daniella Penko, Cameron S. Angus, Stephen T. Beirne, Christopher Drogemuller, Zhilian Yue, Patrick T. Coates, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Over the last two decades, pancreatic islet transplantations have become a promising treatment for Type I diabetes. However, although providing a consistent and sustained exogenous insulin supply, there are a number of limitations hindering the widespread application of this approach. These include the lack of sufficient vasculature and allogeneic immune attacks after transplantation, which both contribute to poor cell survival rates. Here, these issues are addressed using a biofabrication approach. An alginate/gelatin-based bioink formulation is optimized for islet and islet-related cell encapsulation and 3D printing. In addition, a custom-designed coaxial printer is developed for 3D printing of multicellular islet-containing constructs. …
Zinc-Tiered Synthesis Of 3d Graphene For Monolithic Electrodes, Xiangfen Jiang, Ruiqing Li, Ming Hu, Zheng Hu, Dmitri Goldberg, Yoshio Bando, Xuebin Wang
Zinc-Tiered Synthesis Of 3d Graphene For Monolithic Electrodes, Xiangfen Jiang, Ruiqing Li, Ming Hu, Zheng Hu, Dmitri Goldberg, Yoshio Bando, Xuebin Wang
Australian Institute for Innovative Materials - Papers
A high-surface-area conductive cellular carbon monolith is highly desired as the optimal electrode for achieving high energy, power, and lifetime in electrochemical energy storage. 3D graphene can be regarded as a first-ranking member of cellular carbons with the pore-wall thickness down to mono/few-atomic layers. Current 3D graphenes, derived from either gelation or pyrolysis routes, still suffer from low surface area, conductivity, stability, and/or yield, being subjected to methodological inadequacies including patchy assembly, wet processing, and weak controllability. Herein, a strategy of zinc-assisted solid-state pyrolysis to produce a superior 3D graphene is established. Zinc unprecedentedly impregnates and delaminates a solid ("nonhollow") …
Perovskite R3c Phase Agcuf3: Multiple Dirac Cones, 100% Spin Polarization And Its Thermodynamic Properties, Minquan Kuang, Tingzhou Li, Zhenxiang Cheng, Houari Khachai, Rabah Khenata, Tie Yang, Tingting Lin, Xiaotian Wang
Perovskite R3c Phase Agcuf3: Multiple Dirac Cones, 100% Spin Polarization And Its Thermodynamic Properties, Minquan Kuang, Tingzhou Li, Zhenxiang Cheng, Houari Khachai, Rabah Khenata, Tie Yang, Tingting Lin, Xiaotian Wang
Australian Institute for Innovative Materials - Papers
Very recently, experimentally synthesized R3c phase LaCuO3 was studied by Zhang, Jiao, Kou, Liao & Du [J. Mater. Chem. C (2018), 6, 6132-6137], and they found that this material exhibits multiple Dirac cones in its non-spin-polarized electronic structure. Motivated by this study, the focus here is on a new R3c phase material, AgCuF3, which has a combination of multiple Dirac cones and 100% spin polarization properties. Compared to the non-spin-polarized system LaCuO3, the spin-polarized Dirac behavior in AgCuF3 is intrinsic. The effects of on-site Coulomb interaction, uniform strain and spin-orbit coupling were added to examine the stability of its multiple …
Rational Design Of Two-Dimensional Hybrid Co/N-Doped Carbon Nanosheet Arrays For Efficient Bi-Functional Electrocatalysis, Ningyan Cheng, Long Ren, Gilberto Casillas, Si Zhou, Jincheng Zhuang, Li Wang, Xun Xu, Shi Xue Dou, Yi Du
Rational Design Of Two-Dimensional Hybrid Co/N-Doped Carbon Nanosheet Arrays For Efficient Bi-Functional Electrocatalysis, Ningyan Cheng, Long Ren, Gilberto Casillas, Si Zhou, Jincheng Zhuang, Li Wang, Xun Xu, Shi Xue Dou, Yi Du
Australian Institute for Innovative Materials - Papers
Transition metals with desirable valence states have been proposed as efficient non-noble-metal electrocatalytic systems for selective water splitting. In this work, two-dimensional (2D) nitrogen-doped leaf-like carbon matrix arrays functionalized with multi-valence-state transition metal (cobalt) hybrids were successfully prepared by in situ calcination of the corresponding bimetallic leaf-like zeolitic imidazolate framework (ZIF-L) in an inert atmosphere. The 2D morphology of the matrix along with the particle size and surface valence state of the anchored particles has been successfully controlled via precisely adjusting the Co2+/(Zn2+ + Co2+) ratio in the bimetallic ZIF-L precursor. Electrochemical measurements show that the kinetics of and stability …
Strategies For Neural Control Of Prosthetic Limbs: From Electrode Interfacing To 3d Printing, Catherine G.Y. Ngan, Robert M. I Kapsa, Peter Choong
Strategies For Neural Control Of Prosthetic Limbs: From Electrode Interfacing To 3d Printing, Catherine G.Y. Ngan, Robert M. I Kapsa, Peter Choong
Australian Institute for Innovative Materials - Papers
Limb amputation is a major cause of disability in our community, for which motorised prosthetic devices offer a return to function and independence. With the commercialisation and increasing availability of advanced motorised prosthetic technologies, there is a consumer need and clinical drive for intuitive user control. In this context, rapid additive fabrication/prototyping capacities and biofabrication protocols embrace a highly-personalised medicine doctrine that marries specific patient biology and anatomy to high-end prosthetic design, manufacture and functionality. Commercially-available prosthetic models utilise surface electrodes that are limited by their disconnect between mind and device. As such, alternative strategies of mind-prosthetic interfacing have been …
Sheath-Run Artificial Muscles, Jiuke Mu, Monica Jung De Andrade, Shaoli Fang, Xuemin Wang, Enlai Gao, Na Li, Shi Hyeong Kim, Hongzhi Wang, Chengyi Hou, Qinghong Zhang, Meifang Zhu, Dong Qian, Hongbing Lu, Dharshika Kongahage, Sepehr Talebian, Javad Foroughi, Geoffrey M. Spinks, Hyun Kim, Taylor H. Ware, Hyeon Jun Sim, Dong Yeop Lee, Yongwoo Jang, Seon Jeong Kim, Ray H. Baughman
Sheath-Run Artificial Muscles, Jiuke Mu, Monica Jung De Andrade, Shaoli Fang, Xuemin Wang, Enlai Gao, Na Li, Shi Hyeong Kim, Hongzhi Wang, Chengyi Hou, Qinghong Zhang, Meifang Zhu, Dong Qian, Hongbing Lu, Dharshika Kongahage, Sepehr Talebian, Javad Foroughi, Geoffrey M. Spinks, Hyun Kim, Taylor H. Ware, Hyeon Jun Sim, Dong Yeop Lee, Yongwoo Jang, Seon Jeong Kim, Ray H. Baughman
Australian Institute for Innovative Materials - Papers
Although guest-filled carbon nanotube yarns provide record performance as torsional and tensile artificialmuscles, they are expensive, and only part of themuscle effectively contributes to actuation.We describe a muscle type that provides higher performance, in which the guest that drives actuation is a sheath on a twisted or coiled core that can be an inexpensive yarn. This change from guest-filled to sheath-run artificial muscles increases the maximum work capacity by factors of 1.70 to 2.15 for tensile muscles driven electrothermally or by vapor absorption. A sheath-run electrochemical muscle generates 1.98 watts per gram of average contractile power-40 times that for human …
Manipulation Of The Electronic Transport Properties Of Charge-Transfer Oxide Thin Films Of Ndni O3 Using Static And Electric-Field-Controllable Dynamic Lattice Strain, Jian-Min Yan, Meng Xu, Ting-Wei Chen, Ming Yang, Fei Liu, Hui Wang, Lei Guo, Zhi-Xue Xu, Fang-Yuan Fan, Guan-Yin Gao, Si-Ning Dong, Xiao-Guang Li, Hao Luo, Weiyao Zhao, Ren-Kui Zheng
Manipulation Of The Electronic Transport Properties Of Charge-Transfer Oxide Thin Films Of Ndni O3 Using Static And Electric-Field-Controllable Dynamic Lattice Strain, Jian-Min Yan, Meng Xu, Ting-Wei Chen, Ming Yang, Fei Liu, Hui Wang, Lei Guo, Zhi-Xue Xu, Fang-Yuan Fan, Guan-Yin Gao, Si-Ning Dong, Xiao-Guang Li, Hao Luo, Weiyao Zhao, Ren-Kui Zheng
Australian Institute for Innovative Materials - Papers
Using perovskite-type charge-transfer oxide thin films of NdNiO3 (NNO) as a model system, we demonstrate that the effects of lattice strain on the electronic transport properties can be more comprehensively understood by growing NNO films on a number of (001)-, (011)-, and (111)-cut single-crystal substrates with different lattice mismatches including the relaxor-based 0.31Pb(In1/2Nb1/2)O3-0.35Pb(Mg1/3Nb2/3)O3-0.34PbTiO3 (PIN-PMN-PT) and 0.71Pb(Mg1/3Nb2/3)O3-0.29PbTiO3 (PMN-PT) ferroelectric (FE) single crystals. In addition to the static lattice strains from conventional substrates (e.g., SrTiO3, LaAlO3), we in situ impose in-plane compressive or tensile strains to NNO films using FE/ferroelastic domain switching of FE substrates. An unprecedented electric-field-induced large out-of-plane compressive strain …
P2-Type Na2/3ni1/3mn2/3o2as A Cathode Materialwith High-Rate And Long-Life For Sodium Ionstorage, Qiannan Liu, Zhe Hu, Mingzhe Chen, Chao Zou, Huile Jin, Shun Wang, Qinfen Gu, Shulei Chou
P2-Type Na2/3ni1/3mn2/3o2as A Cathode Materialwith High-Rate And Long-Life For Sodium Ionstorage, Qiannan Liu, Zhe Hu, Mingzhe Chen, Chao Zou, Huile Jin, Shun Wang, Qinfen Gu, Shulei Chou
Australian Institute for Innovative Materials - Papers
Layered P2-type Na 2/3 Ni 1/3 Mn 2/3 O 2 was successfully synthesized through a facile sol-gel method and subsequent heat treatment. Resulting from different phase transformation and sodium ion diffusion rates, its electrochemical performance is highly related to the cut-off voltage and the electrolyte used. When the cut-off voltage is set up to 4.5 V or lowered to 1.5 V, capacity fade happens due to the occurrence of P2-O2 transformation and electrolyte decomposition or the redox reaction of the Mn 4+ /Mn 3+ ionic pair and P2-P2′ transformation. The electrode maintained 89.0 mA h g -1 with good cycling …
A Non-Enzymatic Photoelectrochemical Glucose Sensor Based On Bivo4 Electrode Under Visible Light, Shan Wang, Shaoping Li, Wenwen Wang, Mengting Zhao, Jiaofeng Liu, Haifeng Feng, Yiming Chen, Qi Gu, Yi Du, Weichang Hao
A Non-Enzymatic Photoelectrochemical Glucose Sensor Based On Bivo4 Electrode Under Visible Light, Shan Wang, Shaoping Li, Wenwen Wang, Mengting Zhao, Jiaofeng Liu, Haifeng Feng, Yiming Chen, Qi Gu, Yi Du, Weichang Hao
Australian Institute for Innovative Materials - Papers
A non-enzymatic photoelectrochemical (PEC) glucose sensor based on nanoporous bismuth vanadate (BiVO 4 ) electrode is fabricated on fluorine doped tin oxide by electrochemical deposition. The photogenerated holes of BiVO 4 show a strong oxidizing ability, with adsorption of glucose on the surface of BiVO 4 , agreeing well with the classical Langmuir adsorption model. Under visible light irradiation, the glucose molecules adsorbed on the BiVO 4 electrode surface can be oxidized by the photogenerated holes, which results in increased photocurrent. The fabricated BiVO 4 non-enzymatic photoelectrochemical sensor shows outstanding catalytic activity, favourable selectivity, good reproducibility, and long-term stability for …
In Situ Incorporation Of Nanostructured Antimony In An N-Doped Carbon Matrix For Advanced Sodium-Ion Batteries, Zhibin Wu, Bernt Johannessen, Wenchao Zhang, Wei Kong Pang, Jianfeng Mao, Hua-Kun Liu, Zaiping Guo
In Situ Incorporation Of Nanostructured Antimony In An N-Doped Carbon Matrix For Advanced Sodium-Ion Batteries, Zhibin Wu, Bernt Johannessen, Wenchao Zhang, Wei Kong Pang, Jianfeng Mao, Hua-Kun Liu, Zaiping Guo
Australian Institute for Innovative Materials - Papers
Herein, a facile one-step and solvent-free pyrolysis method was developed to control the synthesis of nanostructured Sb embedded in an N-doped carbon matrix (Sb@G x N y -T, where T, G x and N y denote the annealing temperature and the mass (g) of glucose and NH 4 Cl used in the process, respectively). By adjusting these parameters, hybrid architectures can be in situ constructed, including hollow Sb embedded in holeless carbon matrixes (Sb@G 0.25 N 0.5 -950) and Sb nanoplates embedded in holey carbon matrixes (Sb@G 0.25 N 0.25 -950). Our findings suggest that the formation of diverse nanostructures …
Synthesis Of Cose2-Snse2 Nanocube-Coated Nitrogen-Doped Carbon (Nc) As Anode For Lithium And Sodium Ion Batteries, Jin Bai, Huimin Wu, Shiquan Wang, Guangxue Zhang, Chuanqi Feng, Hua-Kun Liu
Synthesis Of Cose2-Snse2 Nanocube-Coated Nitrogen-Doped Carbon (Nc) As Anode For Lithium And Sodium Ion Batteries, Jin Bai, Huimin Wu, Shiquan Wang, Guangxue Zhang, Chuanqi Feng, Hua-Kun Liu
Australian Institute for Innovative Materials - Papers
CoSe2-SnSe2/NC nanocubes (CSNC@NC) coated by nitrogen-doped carbon (NC) were synthesized successfully by an ordinary pyrazole polymerization and carbonization process. In comparison with bare CSNC, the CSNC@NC composite exhibited good structural stability and improved electrical conductivity when used as anode. The CSNC@NC electrode showed a stable Li storage capacity (730.41 mAh g−1 over 100 cycles at 0.2 A g−1) and excellent rate performance (402.10 mAh g−1 at 2 A g−1). For Na storage, the discharge capacity could be maintained 279.3 mAh g−1 over 100 cycles at 0.2 A g−1; the lower capacity than that for Li storage maybe caused by the …
Ultrasonic Spray Deposition Of Tio2 Electron Transport Layers For Reproducible And High Efficiency Hybrid Perovskite Solar Cells, Jingsong Sun, Alexander Pascoe, Steffen Meyer, Qijie Wu, Enrico Della Gaspera, Sonia Raga, Tian Zhang, Andrew Nattestad, Udo Bach, Yi-Bing Cheng, Jacek Jasieniak
Ultrasonic Spray Deposition Of Tio2 Electron Transport Layers For Reproducible And High Efficiency Hybrid Perovskite Solar Cells, Jingsong Sun, Alexander Pascoe, Steffen Meyer, Qijie Wu, Enrico Della Gaspera, Sonia Raga, Tian Zhang, Andrew Nattestad, Udo Bach, Yi-Bing Cheng, Jacek Jasieniak
Australian Institute for Innovative Materials - Papers
The fabrication of high efficiency perovskite solar cells at larger scales will rely on the optimized deposition conditions of every layer using scalable methodologies. Most current perovskite devices that employ the archetypal TiO2 hole blocking layer utilise a simple air-brush approach. This approach is not scalable as it results in significant layer inhomogeneity across larger devices areas. To overcome this inherent limitation, in this work we use ultrasonic spray deposition as an alternative approach for the TiO2 deposition. Focusing on identical reaction chemistries as for air-brush, namely bis(isopropoxide)-bis(acetylacetonate) titanium (IV) based solutions, we find that under optimized conditions smooth TiO2 …
Constructing Coo/Co3s4 Heterostructures Embedded In N-Doped Carbon Frameworks For High-Performance Sodium-Ion Batteries, Can Guo, Wenchao Zhang, Yi Liu, Jiapeng He, Shun Yang, Mingkai Liu, Qinghong Wang, Zaiping Guo
Constructing Coo/Co3s4 Heterostructures Embedded In N-Doped Carbon Frameworks For High-Performance Sodium-Ion Batteries, Can Guo, Wenchao Zhang, Yi Liu, Jiapeng He, Shun Yang, Mingkai Liu, Qinghong Wang, Zaiping Guo
Australian Institute for Innovative Materials - Papers
Heterostructures are attractive for advanced energy storage devices due to their rapid charge transfer kinetics, which is of benefit to the rate performance. The rational and facile construction of heterostructures with satisfactory electrochemical performance, however, is still a great challenge. Herein, ultrafine hetero-CoO/Co3S4 nanoparticles embedded in N-doped carbon frameworks (CoO/Co3S4@N-C) are successfully obtained by employing metal-organic frameworks as precursors. As anodes for sodium ion batteries, the CoO/Co3S4@N-C electrodes exhibit high specific capacity (1029.5 mA h g−1 at 100 mA g−1) and excellent rate capability (428.0 mA h g−1 at 5 A g−1), which may be attributed to their enhanced electric …