期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 56, 期 33, 页码 9856-9859出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201705204
关键词
conjugated radical polymers; lithium polymer batteries; organic radical polymers; polythiophene; TEMPO
资金
- U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES) [DE-SC0014006]
- Welch Foundation [A-1766]
- Directorate For Engineering
- Div Of Engineering Education and Centers [1461202] Funding Source: National Science Foundation
- U.S. Department of Energy (DOE) [DE-SC0014006] Funding Source: U.S. Department of Energy (DOE)
Nitroxide-containing organic radical polymers (ORPs) have captured attention for their high power and fast redox kinetics. Yet a major challenge is the polymer's aliphatic backbone, resulting in a low electronic conductivity. Recent attempts that replace the aliphatic backbone with a conjugated one have not met with success. The reason for this is not understood until now. We examine a family of polythiophenes bearing nitroxide radical groups, showing that while both species are electrochemically active, there exists an internal electron transfer mechanism that interferes with stabilization of the polymer's fully oxidized form. This finding directs the future design of conjugated radical polymers in energy storage and electronics, where careful attention to the redox potential of the backbone relative to the organic radical species is needed.
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