Design strategy towards flame-retardant gel polymer electrolytes for safe lithium metal batteries

被引：9

作者：

Yang, Borui ^{[1
]}

Li, Ting ^{[1
]}

Pan, Yu ^{[1
]}

Yang, Liu ^{[1
]}

Li, Kun ^{[1
]}

Chen, Jiahao ^{[1
]}

Yan, Zhongfu ^{[1
]}

Hu, Anjun ^{[1
,2
]}

Long, Jianping ^{[1
]}

机构：

[1] Chengdu Univ Technol, Coll Mat & Chem & Chem Engn, 1 Dongsanlu Erxianqiao, Chengdu 610059, Sichuan, Peoples R China

[2] Chengdu Univ Technol, Coll Comp Sci & Cyber Secur, 1 Dongsanlu Erxianqiao, Chengdu 610059, Sichuan, Peoples R China

来源：

ENERGY MATERIALS | 2024年 / 4卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Lithium metal batteries; gel polymer electrolytes; flame retardant; thermal runaway; THERMAL RUNAWAY; ION; INTERPHASE; PHOSPHATE;

D O I：

10.20517/energymater.2023.144

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The emergence of lithium metal batteries (LMBs) as a promising technology in energy storage devices is attributed to their high energy density. However, the inherent flammability and leakage of the internal liquid organic electrolyte pose serious safety risks when exposed to heat. In response to this challenge, gel polymer electrolytes (GPEs) have been developed to mitigate leakage and enhance nonflammability by incorporating flame-retardant groups, thereby improving the safety of LMBs. This review commences with a brief analysis of the thermal runaway mechanism specific to LMBs, emphasizing its distinctions from that of lithium-ion batteries. Following this, the various methods employed to assess the safety of LMBs are discussed, including flammability, thermal stability, and abuse assessment. The following section categorizes recent research on safe GPEs according to different flame retardancy levels providing a concise overview of each category. Finally, the review explores current advancements in developing safety-oriented GPEs and considers potential future research directions.

引用

页数：23

共 87 条

[21] A cost-effective, ionically conductive and compressible oxychloride solid-state electrolyte for stable all-solid-state lithium-based batteries [J].