Research progress on lithium-ion conductive solid polymer electrolytes

Abstract The combined advantages of good safety, excellent interfacial compatibility, low cost, and ease of processing make solid-state polymer electrolytes the most desirable candidates for next-generation batteries. However, the low ionic conductivity of these electrolytes limits their application in solid-state batteries. Therefore, an in-depth understanding of the lithium ion conduction mechanism in solid-state polymer electrolytes can help to design electrolytes that conduct lithium ions more efficiently. Typical solid-state polymer electrolytes and their lithium ion conduction mechanisms are reviewed, including 'salt-in-polymer' electrolytes, 'polymer-in-salt' electrolytes, and single-ion-conducting polymer electrolytes. Based on the above understanding, three major strategies to improve the ion transport performance and the latest research progress are described, and an outlook on the enhancement of lithium ion conduction in solid polymer electrolytes is presented.

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	ZHANG Yating
	MA Shuo
	ZHANG Yanan
	LI Xuan
	CHEN Mingming

Keywords： solid-state polymer electrolytes ion transport electrolyte design and optimization research progress

Received 2024-05-13;

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ZHANG Yating, MA Shuo, ZHANG Yanan, LI Xuan, CHEN Mingming.Research progress on lithium-ion conductive solid polymer electrolytes[J] Chemcial Industry and Engineering, 2025,V42(2): 55-67

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