Highly ordered and ultra-long carbon nanotube arrays as air cathodes for high-energy-efficiency Li-oxygen batteries
2016-02-29
发表期刊JOURNAL OF POWER SOURCES (IF:8.1[JCR-2023],8.3[5-Year])
ISSN0378-7753
卷号306页码:402-407
发表状态已发表
DOI10.1016/j.jpowsour.2015.12.042
摘要Carbonaceous air cathodes with rational architecture are vital for the nonaqueous Li-O-2 batteries to achieve large energy density, high energy efficiency and long cycle life. In this work, we report the cathodes made of highly ordered and vertically aligned carbon nanotubes grown on permeable Ta foil substrates (VACNTs-Ta) via thermal chemical vapour deposition. The VACNTs-Ta, composed of uniform carbon nanotubes with approximately 240 pm in superficial height, has the super large surface area. Meanwhile, the oriented carbon nanotubes provide extremely outstanding passageways for Li ions and oxygen species. Electrochemistry tests of VACNTs-Ta air cathodes show enhancement in discharge capacity and cycle life compared to those made from short-range oriented and disordered carbon nano tubes. By further combining with the Lil redox mediator that is dissolved in the tetraethylene dimethyl glycol based electrolytes, the batteries exhibit more than 200 cycles at the current density of 200 mA g(-1) with a cut-off discharge capacity of 1000 mAh g(-1), and their energy efficiencies increase from 50% to 82%. The results here demonstrate the importance of cathode construction for high-energy-efficiency and long-life Li-O-2 batteries. (C) 2015 Elsevier B.V. All rights reserved.
关键词Lithium-oxygen batteries Carbon nanotube arrays Soluble catalyst High energy efficiency
收录类别SCI ; EI
语种英语
资助项目Natural Science Foundation of Shanghai[14ZR1445600]
WOS研究方向Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS类目Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号WOS:000370309300049
出版者ELSEVIER SCIENCE BV
EI入藏号20155201729231
EI主题词Carbon nanotubes ; Cathodes ; Charging (batteries) ; Chemical vapor deposition ; Electric batteries ; Electrodes ; Lithium ; Lithium batteries ; Nanotubes ; Oxygen ; Secondary batteries ; Tantalum ; Yarn
EI分类号Energy Conservation:525.2 ; Lithium and Alloys:542.4 ; Tantalum and Alloys:543.4 ; Electric Batteries and Fuel Cells:702 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Chemical Products Generally:804 ; Fiber Products:819.4
WOS关键词LITHIUM ; ELECTRODES ; GRAPHENE ; CATALYST ; REDUCTION ; OXIDATION ; RECHARGEABILITY ; LIMITATIONS ; COMPOSITE ; DISCHARGE
原始文献类型Article
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文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/1919
专题物质科学与技术学院
物质科学与技术学院_特聘教授组_董绍明组
物质科学与技术学院_硕士生
通讯作者Guo, Xiangxin; Dong, Shaoming
作者单位
1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
2.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 200031, Peoples R China
第一作者单位物质科学与技术学院
通讯作者单位物质科学与技术学院
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Yu, Ruimin,Fan, Wugang,Guo, Xiangxin,et al. Highly ordered and ultra-long carbon nanotube arrays as air cathodes for high-energy-efficiency Li-oxygen batteries[J]. JOURNAL OF POWER SOURCES,2016,306:402-407.
APA Yu, Ruimin,Fan, Wugang,Guo, Xiangxin,&Dong, Shaoming.(2016).Highly ordered and ultra-long carbon nanotube arrays as air cathodes for high-energy-efficiency Li-oxygen batteries.JOURNAL OF POWER SOURCES,306,402-407.
MLA Yu, Ruimin,et al."Highly ordered and ultra-long carbon nanotube arrays as air cathodes for high-energy-efficiency Li-oxygen batteries".JOURNAL OF POWER SOURCES 306(2016):402-407.
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