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Articles 631 - 644 of 644
Full-Text Articles in Engineering
Microporous Materials Formed Via Intercalation Of Ultrathin Coordination Polymers In A Layered Silicate, Yusuke Ide, Satoshi Tominaka, Taiki Okuyama, Nao Tsunoji, Koji Ohara, Masanori Mitome, Tsuneji Sano, Yoshio Bando, Dmitri Golberg
Microporous Materials Formed Via Intercalation Of Ultrathin Coordination Polymers In A Layered Silicate, Yusuke Ide, Satoshi Tominaka, Taiki Okuyama, Nao Tsunoji, Koji Ohara, Masanori Mitome, Tsuneji Sano, Yoshio Bando, Dmitri Golberg
Australian Institute for Innovative Materials - Papers
Development of microporous materials, like zeolites and metal-organic frameworks (MOFs), with unique and better properties, is crucially important, while yet challenging, for many energy applications. Herein, we report on a new family of microporous hybrids having well-defined permanent porosity, which is formed by pillaring a layered silicate with packed coordination polymers. This inorganic-organic hybrid material, having well-defined/two-faced micropores surrounded by the polymers and silicate walls, exhibits superior adsorption toward methanol due to co-operative interactions compared with conventional microporous materials. The material could be used as an adsorbent to selectively and effectively recover methanol from a methanol/water vapour mixture.
Three-Dimensional Porous Cobalt Phosphide Nanocubes Encapsulated In A Graphene Aerogel As An Advanced Anode With High Coulombic Efficiency For High-Energy Lithium-Ion Batteries, Hong Gao, Fuhua Yang, Yang Zheng, Qing Zhang, Junnan Hao, Shilin Zhang, Hao Zheng, Jun Chen, Hua-Kun Liu, Zaiping Guo
Three-Dimensional Porous Cobalt Phosphide Nanocubes Encapsulated In A Graphene Aerogel As An Advanced Anode With High Coulombic Efficiency For High-Energy Lithium-Ion Batteries, Hong Gao, Fuhua Yang, Yang Zheng, Qing Zhang, Junnan Hao, Shilin Zhang, Hao Zheng, Jun Chen, Hua-Kun Liu, Zaiping Guo
Australian Institute for Innovative Materials - Papers
An ingeniously designed porous structure can synergistically optimize the desired properties and maximize the advantages of a material as an electrode for a high-performance energy storage system. The active material with a porous nanostructure could reduce the ion diffusion path and buffer the strain caused by the volume changes during cycling. Furthermore, combining the active material with a three-dimensional (3D) graphene aerogel (GA) matrix is an ideal way to maintain the structural integrity, improve the conductivity, and overcome the aggregation problem of the nanomaterials. Herein, we adopted a facile template-based strategy to derive a composite of 3D hierarchically porous cobalt …
Hierarchically Stacked Reduced Graphene Oxide/Carbon Nanotubes For As High Performance Anode For Sodium-Ion Batteries, Jianmin Feng, Lei Dong, Xifei Li, Dejun Li, Pengyi Lu, Feng Hou, Ji Liang, Shi Xue Dou
Hierarchically Stacked Reduced Graphene Oxide/Carbon Nanotubes For As High Performance Anode For Sodium-Ion Batteries, Jianmin Feng, Lei Dong, Xifei Li, Dejun Li, Pengyi Lu, Feng Hou, Ji Liang, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
Sodium has attracted an increasing amount of attention as an alternative element to lithium for energy storage due to its low cost and wide distribution, although the intercalation problem for sodium ions in conventional anode materials, due to their larger ionic size, still has to be overcome in order to utilize this element. Herein, we report a carbon-based hybrid material that is composed of stacked reduced graphene oxide/carbon nanotubes (rGO/CNTs) with a hierarchical and open structure to accommodate Na ions, which was fabricated by a liquid-phase oxidative exfoliation and subsequent reduction. This rGO/CNTs hybrid material features a hierarchical nanostructure with …
A Hierarchical Porous Fe-N Impregnated Carbon-Graphene Hybrid For High-Performance Oxygen Reduction Reaction, Sihui Wang, Xiao Yan, Kuang-Hsu Wu, Xuemin Chen, Jianmin Feng, Pengyi Lu, Hou Feng, Hui-Ming Cheng, Ji Liang, Shi Xue Dou
A Hierarchical Porous Fe-N Impregnated Carbon-Graphene Hybrid For High-Performance Oxygen Reduction Reaction, Sihui Wang, Xiao Yan, Kuang-Hsu Wu, Xuemin Chen, Jianmin Feng, Pengyi Lu, Hou Feng, Hui-Ming Cheng, Ji Liang, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
A Fe-N impregnated carbon in a hybrid with in-situ grown graphene from hierarchical porous carbon has been obtained for high-performance oxygen reduction reaction (ORR) catalysis. This hybrid material combines the desirable characteristics for the ORR, including Fe-N active sites, high surface area, good electron conductivity, and hierarchical channels for mass diffusion. As a result, this catalyst exhibits a very positive reaction onset potential ( 0.05 V vs. Ag/AgCl), a high ORR current density, and a complete four-electron ORR pathway, which are even better than a commercial 20% Pt/C catalyst. We further reveal the synergistic ORR enhancement from the controlled Fe-N …
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 …
Molybdenum And Tungsten Chalcogenides For Lithium/Sodium-Ion Batteries: Beyond Mos2, Junda Huang, Zengxi Wei, Jiaqin Liao, Wei Ni, Caiyun Wang, Jianmin Ma
Molybdenum And Tungsten Chalcogenides For Lithium/Sodium-Ion Batteries: Beyond Mos2, Junda Huang, Zengxi Wei, Jiaqin Liao, Wei Ni, Caiyun Wang, Jianmin Ma
Australian Institute for Innovative Materials - Papers
Molybdenum and tungsten chalcogenides have attracted tremendous attention in energy storage and conversion due to their outstanding physicochemical and electrochemical properties. There are intensive studies on molybdenum and tungsten chalcogenides for energy storage and conversion, however, there is no systematic review on the applications of WS2, MoSe2and WSe2as anode materials for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs), except MoS2. Considering the importance of these contents, it is extremely necessary to overview the recent development of novel layered WS2, MoSe2and WSe2beyond MoS2in energy storage. Here, we will systematically overview the recent progress of WS2, MoSe2and WSe2as anode materials in LIBs …
High-Performance Graphene-Fiber-Based Neural Recording Microelectrodes, Kezhong Wang, Christopher Frewin, Dorna Esrafilzadeh, Changchun Yu, Caiyun Wang, Joseph Pancrazio, Mario I. Romero-Ortega, Rouhollah Jalili, Gordon G. Wallace
High-Performance Graphene-Fiber-Based Neural Recording Microelectrodes, Kezhong Wang, Christopher Frewin, Dorna Esrafilzadeh, Changchun Yu, Caiyun Wang, Joseph Pancrazio, Mario I. Romero-Ortega, Rouhollah Jalili, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Fabrication of flexible and free-standing graphene-fiber- (GF-) based microelectrode arrays with a thin platinum coating, acting as a current collector, results in a structure with low impedance, high surface area, and excellent electrochemical properties. This modification results in a strong synergistic effect between these two constituents leading to a robust and superior hybrid material with better performance than either graphene electrodes or Pt electrodes. The low impedance and porous structure of the GF results in an unrivalled charge injection capacity of 10.34 mC cm −2 with the ability to record and detect neuronal activity. Furthermore, the thin Pt layer transfers …
An Efficient Multi-Doping Strategy To Enhance Li-Ion Conductivity In The Garnet-Type Solid Electrolyte Li7la3zr2o12, Yedukondalu Meesala, Yu-Kai Liao, Anirudha Jena, Nai-Hsuan Yang, Wei Kong Pang, Shu-Fen Hu, Ho Chang, Chia-Erh Liu, Shih-Chieh Liao, Jin-Ming Chen, Xiangxin Guo, Ru-Shi Liu
An Efficient Multi-Doping Strategy To Enhance Li-Ion Conductivity In The Garnet-Type Solid Electrolyte Li7la3zr2o12, Yedukondalu Meesala, Yu-Kai Liao, Anirudha Jena, Nai-Hsuan Yang, Wei Kong Pang, Shu-Fen Hu, Ho Chang, Chia-Erh Liu, Shih-Chieh Liao, Jin-Ming Chen, Xiangxin Guo, Ru-Shi Liu
Australian Institute for Innovative Materials - Papers
Lithium-ion (Li + ) batteries suffer from problems caused by the chemical instability of their organic electrolytes. Solid-state electrolytes that exhibit high ionic conductivities and are stable to lithium metal are potential replacements for flammable organic electrolytes. Garnet-type Li 7 La 3 Zr 2 O 12 is a promising solid-state electrolyte for next-generation solid-state Li batteries. In this study, we prepared mono-, dual-, and ternary-doped lithium (Li) garnets by doping tantalum (Ta), tantalum-barium (Ta-Ba), and tantalum-barium-gallium (Ta-Ba-Ga) ions, along with an undoped Li 7 La 3 Zr 2 O 12 (LLZO) cubic garnet electrolyte, using a conventional solid-state reaction method. …
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 …
Actuator Materials: Review On Recent Advances And Future Outlook For Smart Textiles, Dharshika Kongahage, Javad Foroughi
Actuator Materials: Review On Recent Advances And Future Outlook For Smart Textiles, Dharshika Kongahage, Javad Foroughi
Australian Institute for Innovative Materials - Papers
Smart textiles based on actuator materials are of practical interest, but few types have been commercially exploited. The challenge for researchers has been to bring the concept out of the laboratory by working out how to build these smart materials on an industrial scale and permanently incorporate them into textiles. Smart textiles are considered as the next frontline for electronics. Recent developments in advance technologies have led to the appearance of wearable electronics by fabricating, miniaturizing and embedding flexible conductive materials into textiles. The combination of textiles and smart materials have contributed to the development of new capabilities in fabrics …
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 …
Emerging Approach In Semiconductor Photocatalysis: Towards 3d Architectures For Efficient Solar Fuels Generation In Semi-Artificial Photosynthetic Systems, Chong Yong Lee, Jinshuo Zou, John P. Bullock, Gordon G. Wallace
Emerging Approach In Semiconductor Photocatalysis: Towards 3d Architectures For Efficient Solar Fuels Generation In Semi-Artificial Photosynthetic Systems, Chong Yong Lee, Jinshuo Zou, John P. Bullock, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Interest in the application of semiconductors toward the photocatalytic generation of solar fuels, including hydrogen from water-splitting and hydrocarbons from the reduction of carbon dioxide, remains strong due to concerns over the continued emission of greenhouse gases as well as other environmental impacts from the use of fossil fuels. While the efficiency and durability of such systems will depend heavily on the types of the semiconductors, co-catalysts, and mediators employed, the dimensionality of the semiconductors employed can also have a significant impact. Recognizing the broad nature of this field and the many recent advances in it, this review focuses on …
Approaching High-Performance Potassium-Ion Batteries Via Advanced Design Strategies And Engineering, Wenchao Zhang, Yajie Liu, Zaiping Guo
Approaching High-Performance Potassium-Ion Batteries Via Advanced Design Strategies And Engineering, Wenchao Zhang, Yajie Liu, Zaiping Guo
Australian Institute for Innovative Materials - Papers
Potassium-ion batteries (PIBs) have attracted tremendous attention due to their low cost, fast ionic conductivity in electrolyte, and high operating voltage. Research on PIBs is still in its infancy, however, and achieving a general understanding of the drawbacks of each component and proposing research strategies for overcoming these problems are crucial for the exploration of suitable electrode materials/electrolytes and the establishment of electrode/ cell assembly technologies for further development of PIBs. In this review, we summarize our current understanding in this field, classify and highlight the design strategies for addressing the key issues in the research on PIBs, and propose …