| Mitigating self-discharge of carbon-based electrochemical capacitors by modifying their electric-double layer to maximize energy efficiency | |
| Wang, Yu-Zuo1,2; Shan, Xu-Yi2,3; Wang, Da-Wei4; Cheng, Hui-Ming2,5; Li, Feng2,6 | |
| Corresponding Author | Wang, Da-Wei(da-wei.wang@unsw.edu.au) ; Cheng, Hui-Ming(cheng@imr.ac.cn) ; Li, Feng(fli@imr.ac.cn) |
| 2019-11-01 | |
| Source Publication | JOURNAL OF ENERGY CHEMISTRY
 |
| ISSN | 2095-4956 |
| Volume | 38Pages:214-218 |
| Abstract | Self-discharge is a significant issue in electric double layer energy storage, which leads to a rapid voltage drop and low energy efficiency. Here, we attempt to solve this problem by changing the structure of the electric double layer into a de-solvated state, by constructing a nano-scale and ion-conductive solid electrolyte layer on the surface of a carbon electrode. The ion concentration gradient and potential field that drive the self-discharge are greatly restricted inside this electric double layer. Based on this understanding, a high-efficiency graphene-based lithium ion capacitor was built up, in which the self-discharge rate is reduced by 50% and the energy efficiency is doubled. The capacitor also has a high energy density, high power output and long life, and shows promise for practical applications. (C) 2019 The Author(s). Published by Elsevier B.V. and Science Press on behalf of Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. |
| Keyword | Electric double layer Self-discharge Graphene Lithium ion capacitor |
| Funding Organization | National Natural Science Foundation of China ; Ministry of Science and Technology of China ; Strategic Priority Research Program of Chinese Academy of Science ; Key Research Program of Chinese Academy of Sciences ; Program for Guangdong Introducing Innovative and Enterpreneurial Teams ; Development and Reform Commission of Shenzhen Municipality |
| DOI | 10.1016/j.jechem.2019.04.004 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51525206] ; National Natural Science Foundation of China[51521091] ; National Natural Science Foundation of China[51172239] ; Ministry of Science and Technology of China[2016YFA0200100] ; Ministry of Science and Technology of China[2016YFB0100100] ; Strategic Priority Research Program of Chinese Academy of Science[XDA22010602] ; Key Research Program of Chinese Academy of Sciences[KGZD-EWT06] ; Program for Guangdong Introducing Innovative and Enterpreneurial Teams ; Development and Reform Commission of Shenzhen Municipality |
| WOS Research Area | Chemistry ; Energy & Fuels ; Engineering |
| WOS Subject | Chemistry, Applied ; Chemistry, Physical ; Energy & Fuels ; Engineering, Chemical |
| WOS ID | WOS:000477704600029 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/134507 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wang, Da-Wei; Cheng, Hui-Ming; Li, Feng |
| Affiliation | 1.Northeastern Univ, Key Lab Anisotropy & Texture Mat, Shenyang 110819, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 3.China Aviat Lithium Battery Technol Co Ltd, Luoyang 471000, Henan, Peoples R China 4.Univ New South Wales, Sch Chem Engn, Sydney, NSW 2052, Australia 5.Tsinghua Univ, Shenzhen Geim Graphene Ctr, Tsinghua Berkeley Shenzhen Inst, Shenzhen 518055, Guangdong, Peoples R China 6.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Yu-Zuo,Shan, Xu-Yi,Wang, Da-Wei,et al. Mitigating self-discharge of carbon-based electrochemical capacitors by modifying their electric-double layer to maximize energy efficiency[J]. JOURNAL OF ENERGY CHEMISTRY,2019,38:214-218. |
| APA | Wang, Yu-Zuo,Shan, Xu-Yi,Wang, Da-Wei,Cheng, Hui-Ming,&Li, Feng.(2019).Mitigating self-discharge of carbon-based electrochemical capacitors by modifying their electric-double layer to maximize energy efficiency.JOURNAL OF ENERGY CHEMISTRY,38,214-218. |
| MLA | Wang, Yu-Zuo,et al."Mitigating self-discharge of carbon-based electrochemical capacitors by modifying their electric-double layer to maximize energy efficiency".JOURNAL OF ENERGY CHEMISTRY 38(2019):214-218. |
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