对酸碳酸盐用于离子电池的调化方法的洞察:一项理论研究
Haoxuan He1, Rui Liu2, Zhaoyi Wu1
1School of Materials and New Energy, South China Normal University, Shanwei, Guangdong 516600, China.
The journal of physical chemistry. B
|July 1, 2025
概括
在离子电池中优化化溶剂是关键. 战略性的排放和数量显著提高了电池的性能和稳定性,特别是在高压应用中.
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
- 计算化学的计算化学
背景情况:
- 化溶剂和添加剂对于离子电池的性能至关重要.
- 数量和位置对溶剂性能的具体影响尚不清楚.
研究的目的:
- 研究循环碳酸盐中原子的数量和位置如何影响它们的性质.
- 为设计用于高压离子电池的先进电解质提供见解.
主要方法:
- 进行了量子化学计算.
- 使用了分子动力学模拟.
- 研究了一系列基于乙烯碳酸盐 (EC) 和碳酸盐 (PC) 的化循环碳酸盐.
主要成果:
- 增加化扩大了电化学稳定性窗口,并增强了Li + 溶解.
- 对于EC来说,双脱法优于邻脱法,用于Li+转移和电化学窗口.
- 对于PC,α-碳 (甲基侧) 的化产生了最佳的电化学窗口和Li+协调.
结论:
- 替代物的数量和位置极大地影响循环碳酸盐的特性.
- 这项研究提供了一种通过精确化来改善高压金属电池电解质的策略.
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