globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2020.03.004
论文题名:
Superstructured α-Fe2O3 nanorods as novel binder-free anodes for high-performing fiber-shaped Ni/Fe battery
作者: Liu C.; Li Q.; Cao J.; Zhang Q.; Man P.; Zhou Z.; Li C.; Yao Y.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期:10
起始页码: 812
结束页码: 819
语种: 英语
中文关键词: Ni/Fe battery ; PPy coating ; Superstructures ; Wearable electronics ; α-Fe2O3 nanorods
英文关键词: Carbon nanotubes ; Durability ; Electrodes ; Energy storage ; Hematite ; Nanorods ; Nickel compounds ; Polypyrroles ; Storage (materials) ; Wearable technology ; Conductive carbon nanotubes ; Electrically conductive ; High specific capacity ; Iron based materials ; Mechanical flexibility ; Portable electronics ; Superstructures ; Volumetric energy densities ; Secondary batteries
英文摘要: Fiber-shaped energy storage devices are indispensable parts of wearable and portable electronics. Aqueous rechargeable Ni/Fe battery is a very appropriate energy storage device due to their good safety without organic electrolytes, high ionic conductivity, and low cost. Unfortunately, the low energy density, poor power density and cycling performance hinder its further practical applications. In this study, in order to obtain high performance negative iron-based material, we first synthesized α-iron oxide (α-Fe2O3) nanorods (NRs) with superstructures on the surface of highly conductive carbon nanotube fibers (CNTFs), then electrically conductive polypyrrole (PPy) was coated to enhance the electron, ion diffusion and cycle stability. The as-prepared α-Fe2O3@PPy NRs/CNTF electrode shows a high specific capacity of 0.62 Ah cm−3 at the current density of 1 A cm−3. Furthermore, the Ni/Fe battery that was assembled by the above negative electrode shows a maximum volumetric energy density of 15.47 mWh cm−3 with 228.2 mW cm−3 at a current density of 1 A cm−3. The cycling durability and mechanical flexibility of the Ni/Fe battery were tested, which show good prospect for practical application. In summary, these merits make it possible for our Ni/Fe battery to have practical applications in next generation flexible energy storage devices. © 2020 Science China Press
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169980
Appears in Collections:气候变化与战略

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作者单位: School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei, 230026, China; Division of Advanced Nanomaterials, Key Laboratory of Nanodevices and Applications, Joint Key Laboratory of Functional Nanomaterials and Devices, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nanotech and Nanobionics, Chinese Academy of Sciences, Suzhou, 215123, China; National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China; Division of Nanomaterials and Jiangxi Key Lab of Carbonene Materials, Suzhou Institute of Nano-Tech and Nano-Bionics, Nanchang, Chinese Academy of Sciences, Nanchang, 330200, China; Senior 1 Class 15, Suzhou High School of Jiangsu Province, Suzhou, 215123, China

Recommended Citation:
Liu C.,Li Q.,Cao J.,et al. Superstructured α-Fe2O3 nanorods as novel binder-free anodes for high-performing fiber-shaped Ni/Fe battery[J]. Science Bulletin,2020-01-01,65(10)
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