一种低度全酸盐电解质,用于高压和高安全的离子电池
Jiawei Lai1, Xueyi Zeng1, Yuxin Yao1
1School of Chemistry, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, South China Normal University, Guangzhou, Guangdong, China.
Advanced materials (Deerfield Beach, Fla.)
|December 24, 2025
概括
研究人员开发了一种新的非易燃酸盐电解质,用于更安全的离子电池 (LIB). 这种新的电解质能够在高电压和极端温度下稳定运行,大大提高了电池的安全性.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 离子电池 (LIB) 通常使用易燃的碳酸盐电解质,造成安全风险.
- 开发非易燃电解质对于提高LIB安全性至关重要,特别是在高压应用中.
研究的目的:
- 设计和合成一种与商业石墨阳极相容的全酸盐溶剂新型非易燃电解质.
- 为了提高离子电池的安全性和高温性能.
主要方法:
- 合成了一种具有石墨被动化能力的新型六成员循环酸盐 (HTP).
- 使用三2,2,2-三乙烯酸盐 (FTEP) 作为辅溶剂来调整溶解结构和Li+脱溶.
- 研究电解质特性,包括潜在的窗口,闪点,不易燃性和热稳定性.
主要成果:
- 开发的低度全酸盐溶剂电解质具有广泛的潜在窗口和高点燃点.
- 电解质表现出优异的不易燃性和热稳定性,使其能够稳定4.5V石墨灯管NMC811全电池运行到100°C.
- 电解质促进了强大的无机聚合物阴极和固体电解质介相 (CEI/SEI) 的形成.
结论:
- 这种基于HTP的新型电解质为高压和高安全性离子电池提供了一个有前途的解决方案.
- 这项工作为设计适用于各种电池系统的不可燃电解质提供了新的见解.
- 开发的电解质经过了严格的安全测试,突出了其商业应用的潜力.
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