期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 44, 页码 15707-15711出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201908985
关键词
double-network hydrogels; elastic supercapacitors; polymers; polypyrrole
资金
- GRF Scheme [CityU 11305218]
- Science Technology and Innovation Committee of Shenzhen Municipality [JCYJ20170818103435068]
- National Nature Science Foundation of China [21504022]
- Henan Province [NSFRF1605, 2016GGJS-039, 17HASTIT006]
Multiple stretchability has never been demonstrated as supercapacitors because the hydrogel used cannot fully recover after being heavily deformed. Now, a highly reversibly stretchable all-polymer supercapacitor was fabricated using a developed double network hydrogel (DN hydrogel) as electrolyte and pure polypyrrole (PPy) as electrode. The DN hydrogel provides excellent mechanical properties, which can be stretched up to 500 % many times and then restore almost 100 % of the original length. To fabricate the fully recoverable stretchable supercapacitor, we annealed a free-standing pure conducting polymer film as electrode so that the electrodes induced retardance is minimized. The as-fabricated DN hydrogel/pure conducting polymer supercapacitors can be perfectly recovered from 100 % strain with almost no residual deformation left and the electrochemical performance can be maintained even after 1000 stretches (but not bending).
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