Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 55, Issue 32, Pages 9196-9201Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201603417
Keywords
bioinspired functional materials; conductive polymers; supercapacitors; hydrogels; supramolecular assembly
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Funding
- National Natural Science Foundation of China [21474094, 81401531]
- Natural Science Foundation of Anhui Province [1508085QH154]
- Fundamental Research Funds for the Central Universities [WK2060190044]
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We report a supramolecular strategy to prepare conductive hydrogels with outstanding mechanical and electrochemical properties, which are utilized for flexible solid-state supercapacitors (SCs) with high performance. The supramolecular assembly of polyaniline and polyvinyl alcohol through dynamic boronate bond yields the polyaniline-polyvinyl alcohol hydrogel (PPH), which shows remarkable tensile strength (5.3 MPa) and electrochemical capacitance (928 Fg(-1)). The flexible solid-state supercapacitor based on PPH provides a large capacitance (306 mFcm(-2) and 153 Fg(-1)) and a high energy density of 13.6 Whkg(-1), superior to other flexible supercapacitors. The robustness of the PPH-based supercapacitor is demonstrated by the 100% capacitance retention after 1000 mechanical folding cycles, and the 90% capacitance retention after 1000 galvanostatic charge-discharge cycles. The high activity and robustness enable the PPH-based supercapacitor as a promising power device for flexible electronics.
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