离子液体基凝胶电解质的制备及其在超级电容器中的应用

doi:10.3969/j.issn.0253-2417.2020.04.003

Abstract

Abstract:

Soybean protein isolates (SPI) were integrated with polyacrylamide (PAAm) to form an ionic liquid-containing gel polymer as a new quasi-solid-state electrolyte, which could be used in supercapacitor. And the electrochemical performance and compressibility of supercapacitor were studied. The synergistic effect of SPI and PAAm endowed the gel electrolyte with excellent compressive resilience and fatigue resistance. Particularly, the gel electrolyte could maintain structural integrity even under 80% strain for 100 compression cycles, the plastic deformation was less than 15% and the energy loss coefficient was more than 0.1. The symmetric quasi-solid-state supercapacitor based on this gel electrolyte exhibited satisfied electrochemical performance, delivering the maximum energy density of 25.99 W·h/kg and the maximal power density of 3 600 W/kg. And the device could withstand 80% compression strain without structural fracture or damage, showing excellent compressibility and capacitive stability.

Key words: ionic liquid, gel electrolyte, compressive resilience, supercapacitor, capacitive stability

CLC Number:

TQ35

Jingya NAN,Gaitong ZHANG,Lijun WANG,Hongsheng WANG,Fuxiang CHU,Chunpeng WANG. Preparation of Ionic Liquid-based Gel Electrolytes and Application in Supercapacitors[J]. Chemistry and Industry of Forest Products, 2020, 40(4): 17-23.

Figures/Tables 7

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References 15

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Preparation of Ionic Liquid-based Gel Electrolytes and Application in Supercapacitors

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