A Highly Elastic and Reversibly Stretchable All‐Polymer Supercapacitor. (18th September 2019)

• Record Type: Journal Article
• Authors: Wang, Yukun; Chen, Feng; Liu, Zhuoxin; Tang, Zijie; Yang, Qi; Zhao, Yan; Du, Shanyi; Chen, Qiang; Zhi, Chunyi
• Is Part Of: Angewandte Chemie. Volume 131:Number 44(2019)
• Page Start: 15854
• Page End: 15858
• Publication Date: 2019-09-18
• Subjects: Doppelnetzwerk-Hydrogele -- Elastische Superkondensatoren -- Polymere -- Polypyrrol; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201908985
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Multiple stretchability has never been demonstrated as supercapacitors because the hydrogel used cannot fully recover after being heavily deformed. Now, a highly reversibly stretchable all‐polymer supercapacitor was fabricated using a developed double network hydrogel (DN hydrogel) as electrolyte and pure polypyrrole (PPy) as electrode. The DN hydrogel provides excellent mechanical properties, which can be stretched up to 500 % many times and then restore almost 100 % of the original length. To fabricate the fully recoverable stretchable supercapacitor, we annealed a free‐standing pure conducting polymer film as electrode so that the electrodes induced retardance is minimized. The as‐fabricated DN hydrogel/pure conducting polymer supercapacitors can be perfectly recovered from 100 % strain with almost no residual deformation left and the electrochemical performance can be maintained even after 1000 stretches (but not bending). Abstract : Fantastisch elastisch : Ein neuer All‐Polymer‐Superkondensator beruht auf einem Agar/HPAAm‐Doppelnetzwerk‐Hydrogel und einem reinen Polypyrrolfilm. Der Superkondensator ist hoch elastisch und reversibel dehnbar: Er lässt sich ohne merklichen Leistungsverlust und Dehnungsrückstände 1000‐mal dehnen und wieder zurückstellen. HPAAm=hydrophob assoziiertes Polyacrylamid.