高压电解质的配方原理和协同效应
Zewei Wei1, Du Yuan2, Xuedi Yuan1
1Beijing Key Laboratory of Solid State Battery and Energy Storage Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China. htzhang@ipe.ac.cn.
Chemical Society reviews
|March 6, 2025
概括
高压电解质 (HVE) 对于先进的离子电池 (LIB) 是至关重要的. 本综述探讨了HVE,它们的机制,以及改善电池性能和稳定性的配方原则.
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
- 电池技术 电池技术
背景情况:
- 商业离子电池 (LIB) 由于阴极潜力和容量而面临能量密度的限制.
- 目前的碳酸盐基电解质,如LiPF6,在高电压条件下降解,导致氧化分解和不稳定的介面相.
- 了解高压电解质 (HVEs) 的复杂机制对于下一代电池的开发至关重要.
研究的目的:
- 为LIBs提供高压电解质 (HVEs) 的全面审查.
- 研究高压阴极的化学环境和商业电解质的故障模式.
- 探索新型HVEs的选标准和配方原则.
主要方法:
- 对HVEs的物理性质,溶解结构和接口化学进行审查.
- 基于能量水平的氧化抵抗,分解机制和相间物种的分析.
- 关于从溶解结构到相间特征的跨尺度演变框架的建议.
主要成果:
- 商业电解质由于氧化分解和不稳定的介相而存在局限性.
- 研究了单元电解质和相间物种的选标准.
- 提出了一个框架,以了解HVE中的配方原则和协同效应.
结论:
- 开发稳定的HVE需要了解溶解结构和接口化学.
- 综合计算和实验方法的系统方法是发现新电解质候选物的关键.
- 对驱动效应和多组件电解质的进一步研究将提高HVE的性能.
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