Energy Storage Science and Technology ›› 2020, Vol. 9 ›› Issue (3): 776-783.doi: 10.19799/j.cnki.2095-4239.2019.0284

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Research progress of gel polymer electrolytes on solid supercapacitors

QU Chenying(), HOU Zhaoxia(), WANG Xiaohui, WANG Jian, WANG Kai, LI Siyao   

  1. Liaoning Provincial Key Laboratory of Micro-nano Materials Research and Development, School of Mechanical Engineering, Shenyang University, Shenyang 110044, Liaoning, China
  • Received:2019-12-22 Revised:2020-01-16 Online:2020-05-05 Published:2020-05-11
  • Contact: Zhaoxia HOU E-mail:1738386607@qq.com;Luckyxia2007@126.com

Abstract:

Solid supercapacitors (SSCs) have become a hotspot of supercapacitor research as they satisfy safety requirements and are environment friendly. SSCs require electrolytes with low electronic conductivity, high ionic conductivity at room temperature, and good mechanical properties. Gel polymer electrolyte (GPE) is a solid polymer electrolyte with high ionic conductivity, zero risk of electrolyte leakage, no toxicity (unlike water systems), and heat resistance properties (unlike flammable organic systems). Depending on the solvent type, GPEs can be prepared as hydrogel polymer electrolytes, organic gel polymer electrolytes, or ionic liquid gel electrolytes. GPE is mainly composed of a polymer matrix, an additive, and a conductive salt. It plays dual roles as an ion-conducting medium and a separator. This article summarizes the latest research progress on GPE in SSCs and suggests the research development trends of future GPE-based SCCs.

Key words: Gel polymer electrolyte, additive, conductive salt, ionic conductivity, solid supercapacitors

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