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- Title
An Intrinsically Stretchable and Compressible Supercapacitor Containing a Polyacrylamide Hydrogel Electrolyte.
- Authors
Huang, Yan; Zhong, Ming; Shi, Fukuan; Liu, Xiaoying; Tang, Zijie; Wang, Yukun; Huang, Yang; Hou, Haoqing; Xie, Xuming; Zhi, Chunyi
- 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.
- Subjects
SUPERCAPACITORS; ELECTROLYTES; POLYACRYLAMIDE; HYDROGELS; COMPRESSIBILITY; POLYVINYL alcohol; SILICA nanoparticles
- Publication
Angewandte Chemie, 2017, Vol 129, Issue 31, p9269
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201705212