A self-healable and highly stretchable supercapacitor based on a dual crosslinked polyelectrolyte.
A self-healable and highly stretchable supercapacitor based on a dual crosslinked polyelectrolyte.
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基于双交联聚电解质的自修复和高拉伸超级电容器
DOI：
10.1038/ncomms10310
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发表时间：
2015-12-22
影响因子：
16.6
通讯作者：
Zhi C
中科院分区：
文献类型：
--
作者：
Huang Y;Zhong M;Huang Y;Zhu M;Pei Z;Wang Z;Xue Q;Xie X;Zhi C
上级自修复性和拉伸性是个性化电子产品（例如便携式和可穿戴能量存储设备）的实际广泛采用的关键要素。然而，可自修复超级电容器的低修复效率和可拉伸超级电容器的小应变从根本上受到传统的基于聚乙烯醇的酸性电解质的限制，其本质上既不是可自修复的也不是高度可拉伸的。在这里，我们报道了一种包含通过氢键键合双重交联的聚丙烯酸和乙烯基杂化二氧化硅纳米颗粒的电解质，其显示出所有上级功能，并提供了超级电容器的固有自修复性和高拉伸性问题的解决方案。具有这种电解质的超级电容器是非自主自我修复的，即使在20次断裂/修复循环后也能完全保持电容。这些超级电容器被拉伸到600%的应变，使用设计的简易电极制造程序增强性能。
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.