ShanghaiTech University Knowledge Management System
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]) |
ISSN | 0378-7753 |
卷号 | 306页码:402-407 |
发表状态 | 已发表 |
DOI | 10.1016/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 |
引用统计 | 正在获取...
|
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 |
推荐引用方式 GB/T 7714 | 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. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 |
修改评论
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。