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An Intrinsically Stretchable and Compressible Supercapacitor Containing a Polyacrylamide Hydrogel Electrolyte
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2017-06-29 , DOI: 10.1002/anie.201705212
Yan Huang 1 , Ming Zhong 2, 3 , Fukuan Shi 2 , Xiaoying Liu 2 , Zijie Tang 1 , Yukun Wang 1 , Yang Huang 4 , Haoqing Hou 3 , Xuming Xie 2 , Chunyi Zhi 1
Affiliation  

Stretchability and compressibility of supercapacitors is an essential element of modern electronics, such as flexible, wearable devices. Widely used polyvinyl alcohol‐based electrolytes are neither very stretchable nor compressible, which fundamentally limits the realization of supercapacitors with high stretchability and compressibility. A new electrolyte that is intrinsically super‐stretchable and compressible is presented. Vinyl hybrid silica nanoparticle cross‐linkers were introduced into polyacrylamide hydrogel backbones to promote dynamic cross‐linking of the polymer networks. These cross‐linkers serve as stress buffers to dissipate energy when strain is applied, providing a solution to the intrinsically low stretchability and compressibility shortcomings of conventional supercapacitors. The newly developed supercapacitor and electrolyte can be stretched up to an unprecedented 1000 % strain with enhanced performance, and compressed to 50 % strain with good retention of the initial performance.

中文翻译:

含有聚丙烯酰胺水凝胶电解质的本征可拉伸和压缩超级电容器

超级电容器的可拉伸性和可压缩性是现代电子产品(如柔性,可穿戴设备)的基本要素。广泛使用的基于聚乙烯醇的电解质既不能很好地拉伸,也不能压缩,这从根本上限制了具有高拉伸性和可压缩性的超级电容器的实现。提出了一种本质上超级可拉伸和可压缩的新型电解质。将乙烯基杂化二氧化硅纳米粒子交联剂引入聚丙烯酰胺水凝胶主链中,以促进聚合物网络的动态交联。这些交联剂充当应力缓冲剂,可在施加应变时消散能量,从而解决了传统超级电容器固有的低拉伸性和可压缩性缺点。
更新日期:2017-06-29
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