期刊
ADVANCED FUNCTIONAL MATERIALS
卷 27, 期 24, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201700690
关键词
diol-borate bonding; dynamic polymer networks; omni-healable capacitors; physical deformation; tailorable
类别
资金
- National Natural Science Foundation of China [51473041]
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [51521003]
- self-planned task of the State Key Laboratory of Robotics and System of Harbin Institute of Technology [SKLRS201604C]
Self-healing will greatly improve the reliability of an energy-storage device in case of physical damage, but the challenge remains in assembling such a smart device capable of repairing all its electroactive components simultaneously. Here, an omni-healable supercapacitor that can spontaneously repair its electrolyte, electrodes, and even the interfaces between them in ambient conditions after mechanical damage is reported. The goal is achieved by integrating electrolyte and electrode materials into a dynamic poly(vinyl alcohol)-based network cross-linked by diol-borate ester bonding. The capacitor fast restores its configuration, mechanical properties, and capacitive performances during all 15 breaking/healing cycles without external stimulus, regardless of the breaking positions. Interestingly, the capacitor can tolerate various physical deformations and even tailoring without performance deterioration. The investigation offers a facile and versatile strategy to construct an intrinsically self-healable energy-storage device that has potential application for portable/wearable electronics, smart apparels or flexible robots, and so on.
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