An Intrinsically Stretchable and Compressible Supercapacitor Containing a Polyacrylamide Hydrogel Electrolyte

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...

Full description

Saved in:
Bibliographic Details
Published in:Angewandte Chemie 2017-07, Vol.129 (31), p.9269-9273
Main Authors: Huang, Yan, Zhong, Ming, Shi, Fukuan, Liu, Xiaoying, Tang, Zijie, Wang, Yukun, Huang, Yang, Hou, Haoqing, Xie, Xuming, Zhi, Chunyi
Format: Article
Language:English
Subjects:
Alcohols
Chemical industry
Chemistry
Compressibility
Crosslinking
Dissipation
Electrolytes
Hydrogelelektrolyte
Hydrogels
Intrinsische Streckfähigkeit
Kompressibilität
Nanoparticles
Polyacrylamid
Polyvinyl alcohol
Silica
Silicon dioxide
Stretchability
Supercapacitors
Superkondensatoren
Wearable technology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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. Streck Dich! Ein leicht herstellbarer Polyacrylamid‐Hydrogelelektrolyt verleiht einem Superkondensator eine intrinsische und beispiellose Streckfähigkeit von 1000 % bei erhöhter Leistung sowie eine hohe Kompressibilität von 50 % bei gleichbleibender Kapazität.
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.201705212