An Intrinsically Stretchable and Compressible Supercapacitor Containing a Polyacrylamide Hydrogel Electrolyte
Top Cited Papers
- 29 June 2017
- journal article
- research article
- Published by Wiley in Angewandte Chemie-International Edition
- Vol. 56 (31), 9141-9145
- https://doi.org/10.1002/anie.201705212
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.Keywords
Funding Information
- NSFC/RGC Joint Research Scheme (Project N_CityU123/15, 5151101197)
- City University of Hong Kong (HK) (PJ 7004645, PJ 9610372)
- NSFC (51633003)
- Natural Science Foundation of Jiangxi Province of China (20171BAB206018)
- Foundation of Jiangxi Educational Committee (GJJ160286)
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