期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 25, 页码 8468-8473出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201903152
关键词
chalcogenoviologens; electrochemistry; electrochromism; electrode materials; organic lithium-ion batteries
资金
- Natural Science Foundation of China [21704081, 21875180]
- Fundamental Research Funds for the Central Universities [1191329805]
- Natural Science Foundation of Shaanxi Province [2018JM2026]
- National 1000-Plan program
- Cyrus Chung Ying Tang Foundation
A series of electrochromic electron-accepting poly(chalcogenoviologen)s with multiple, stable, and reversible redox centers were used as anodic materials in organic radical lithium-ion batteries (ORLIBs). The introduction of heavy atoms (S, Se, and Te) into the viologen scaffold significantly improved the capacity and cycling stability of the ORLIBs. Notably, the poly(Te-BnV) anode was able to intercalate 20 Li ions and showed higher conductivity and insolubility in the electrolyte, thus contributing to a reversible capacity of 502mAhg(-1) at 100mAg(-1) when the Coulombic efficiency approached 100%. The charged/discharged state of flexible electrochromic batteries fabricated from these anodic materials could be monitored visually owing to the unique electrochromic and redox properties of the materials. This study opens a promising avenue for the development of organic polymer-based electrodes for flexible hybrid visual electronics.
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