Recyclable, Self‐Healing Solid Polymer Electrolytes by Soy Protein‐Based Dynamic Network

Advanced Science

Zhen Fang¹  Jianzhang Li²  Tao Liu²  Shanshan Gong²  Weidong Gu²  Qiang Gao²  Feng Li² 

[1] Department of Biochemistry & Molecular Biology Great Lakes Bioenergy Research Center‐Michigan State University East Lansing MI 48824 USA;MOE Key Laboratory of Wood Material Science and Application & Beijing Key Laboratory of Wood Science and Engineering Beijing Forestry University Beijing 100083 China;

关键词: solid polymer electrolytes;    soy protein isolate;    vitrimers;   

DOI  :  10.1002/advs.202103623

来源: DOAJ

【 摘 要 】

Abstract Compared to traditional organic liquid electrolytes, which often present leakage, flammability, and chemical stability problems, solid polymer electrolytes (SPEs) are widely regarded as one of the most promising candidates for the development of safer lithium‐ion batteries. Vitrimers are a new class of polymer materials consisting of dynamic covalent networks that can change their topology by thermally activated bond‐exchange reactions. Herein, the recyclable and self‐healing solid polymer electrolytes (SPEs) with a soy protein isolate (SPI)‐based imine bond dynamic network are reported. This malleable covalent cross‐linked network polymer can be reshaped and recycled at high temperature (100 °C) or only with water at ambient temperature (25 °C), which may realize the green processing of energy materials. The introduction of bis(trifluoromethane) sulfonimide lithium (LiTFSI) significantly reinforces the conductivity of the dynamic network to a maximum of 3.3 × 10−4 S cm‐1. This simple and applicable method establishes new principles for designing scalable and flexible strategies for fabricating polymer electrolytes.

【 授权许可】

Unknown