1. An Intrinsically Stretchable and Compressible Supercapacitor Containing a Polyacrylamide Hydrogel Electrolyte.
- Author
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Huang, Yan, Zhong, Ming, Shi, Fukuan, Liu, Xiaoying, Tang, Zijie, Wang, Yukun, Huang, Yang, Hou, Haoqing, Xie, Xuming, and Zhi, Chunyi
- Subjects
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COMPRESSIBLE flow , *SUPERCAPACITORS , *POLYACRYLAMIDE , *HYDROGELS , *POLYVINYL alcohol - Abstract
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. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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