SIC OpenIR
Enhanced specific capacitance by a new dual redox-active electrolyte in activated carbon-based supercapacitors
Wang, Yuan; Chang, Zheng; Qian, Meng; Zhang, Zhichao; Lin, Jie; Huang, Fuqiang
2019-03-01
Source PublicationCARBON
ISSN0008-6223
Volume143Pages:300
SubtypeArticle
AbstractCommercial electrochemical capacitors exhibit high power density and long cycle life but suffer from low energy density due to low specific capacitance of activated carbon (< 200 F g(-1)). Redox-enhanced electrochemical capacitors achieve higher specific energy by adding redox-active ingredients to the electrolyte, which provide additional faradaic pseudo-capacitance. Here, high-performance and stable aqueous redox electrochemical capacitors using a new dual-active electrolyte is developed, and the specific capacitance of activated carbon increases to 885 F g(-1) after adding 0.05M FeBr3 with no degradation over 10,000 cycles in a two-electrode cell, which is more than four-fold of the original capacitance of 204 F g(-1). In addition, PVA was introduced to the electrolyte and proved to be a useful way to increase the coulombic efficiency. Moreover, this new energy storage system delivers high specific energy of 40Wh kg(-1) in 0.5M Na2SO4 based on the mass of electrodes. (C) 2018 Elsevier Ltd. All rights reserved.
KeywordElectric double-layer capacitors Redox-active electrolyte FeBr3
DOI10.1016/j.carbon.2018.11.033
Language英语
WOS Research AreaChemistry ; Materials Science
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27318
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Wang, Yuan,Chang, Zheng,Qian, Meng,et al. Enhanced specific capacitance by a new dual redox-active electrolyte in activated carbon-based supercapacitors[J]. CARBON,2019,143:300.
APA Wang, Yuan,Chang, Zheng,Qian, Meng,Zhang, Zhichao,Lin, Jie,&Huang, Fuqiang.(2019).Enhanced specific capacitance by a new dual redox-active electrolyte in activated carbon-based supercapacitors.CARBON,143,300.
MLA Wang, Yuan,et al."Enhanced specific capacitance by a new dual redox-active electrolyte in activated carbon-based supercapacitors".CARBON 143(2019):300.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wang, Yuan]'s Articles
[Chang, Zheng]'s Articles
[Qian, Meng]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang, Yuan]'s Articles
[Chang, Zheng]'s Articles
[Qian, Meng]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang, Yuan]'s Articles
[Chang, Zheng]'s Articles
[Qian, Meng]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.