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A self-healable and highly stretchable supercapacitor based on a dual crosslinked polyelectrolyte

Yan HuangDepartment of Physics and Materials Science, City University of Hong Kong, Hong Kong 999077, ChinaMing ZhongLaboratory of Advanced Materials (MOE), Department of Chemical Engineering, Tsinghua University, Beijing 100084, ChinaYang HuangDepartment of Physics and Materials Science, City University of Hong Kong, Hong Kong 999077, ChinaMinshen ZhuDepartment of Physics and Materials Science, City University of Hong Kong, Hong Kong 999077, ChinaZengxia PeiDepartment of Physics and Materials Science, City University of Hong Kong, Hong Kong 999077, ChinaZifeng WangDepartment of Physics and Materials Science, City University of Hong Kong, Hong Kong 999077, ChinaQi XueDepartment of Physics and Materials Science, City University of Hong Kong, Hong Kong 999077, ChinaXu‐Ming XieLaboratory of Advanced Materials (MOE), Department of Chemical Engineering, Tsinghua University, Beijing 100084, ChinaChunyi ZhiDepartment of Physics and Materials Science, City University of Hong Kong, Hong Kong 999077, China

2015en

ABI

Annotatsiya

Superior self-healability and stretchability are critical elements for the practical wide-scale adoption of personalized electronics such as portable and wearable energy storage devices. However, the low healing efficiency of self-healable supercapacitors and the small strain of stretchable supercapacitors are fundamentally limited by conventional polyvinyl alcohol-based acidic electrolytes, which are intrinsically neither self-healable nor highly stretchable. Here we report an electrolyte comprising polyacrylic acid dual crosslinked by hydrogen bonding and vinyl hybrid silica nanoparticles, which displays all superior functions and provides a solution to the intrinsic self-healability and high stretchability problems of a supercapacitor. Supercapacitors with this electrolyte are non-autonomic self-healable, retaining the capacitance completely even after 20 cycles of breaking/healing. These supercapacitors are stretched up to 600% strain with enhanced performance using a designed facile electrode fabrication procedure.

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Identifikatorlar

DOI: 10.1038/ncomms10310

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