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Self-Healable Polyelectrolytes With Mechanical Enhancement for Flexible and Durable Supercapacitors

Self-Healable Polyelectrolytes With Mechanical Enhancement for Flexible and Durable Supercapacitors

Bo Zhang, Jinhui Li, Feng Liu, Tao Wang, Ying Wang, Rui Xuan, Guoping Zhang, Rong Sun, Ching-Ping Wong

Chemistry. 2019 Sep 6;25(50):11715-11724.

PMID: 31241235

Abstract:

The practical application of advanced personalized electronics is inseparable from flexible, durable, and even self-healable energy storage devices. However, the mechanical and self-healing performance of supercapacitors is still limited at present. Herein, highly transparent, stretchable, and self-healable poly(2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPSA)/poly(vinyl alcohol) (PVA)/LiCl polyelectrolytes were facilely prepared by one-step radical polymerization. The cooperation of PAMPSA and PVA significantly increased the mechanical and self-healing capacity of the polyelectrolyte, which exhibited superior stretchability of 938 %, stress of 112.68 kPa, good electrical performance (ionic conductivity up to 20.6 mS cm-1 ), and high healing efficiency of 92.68 % after 24 h. After assembly with polypyrrole-coated single-walled carbon nanotubes, the resulting as-prepared supercapacitor had excellent electrochemical properties with high areal capacitance of 297 mF cm-2 at 0.5 mA cm-2 and good rate capability (218 mF cm-2 at 5 mA cm-2 ). Besides, after cutting in two the supercapacitor recovered 99.2 % of its original specific capacitance after healing for 24 h at room temperature. The results also showed negligible change in the interior contact resistance of the supercapacitor after ten cutting/healing cycles. The present work provides a possible solution for the development of smart and durable energy storage devices with low cost for next-generation intelligent electronics.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP27119079	Poly(2-acrylamido-2-methyl-1-propanesulfonic acid) solution		27119-07-9	Price

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