通过溶剂协调化学,在埃斯特防火离子电解质中的断裂扩散极限.
Jidao Li1, Junli Long1, He Du1
1College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, P.R. China.
Angewandte Chemie (International ed. in English)
|October 24, 2025
概括
我们开发了一个新的描述器引导框架,用于设计更安全,高性能的离子电池电解质. 这种方法克服了传统的局限性,为先进的能源存储提供了防火和快速充电功能.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 传统的离子电池 (SIB) 电解质在性能和安全方面面临限制.
- 目前的电解质设计依赖于低效的试错方法,没有明确的选择规则.
研究的目的:
- 建立一个以描述符为指导的框架,用于识别本质上防火,以基的SIB电解质.
- 为了克服传统的扩散极限并提高电池性能.
主要方法:
- 开发了一个基于溶剂氧化稳定性和Na+-溶剂协调化学的框架.
- 选的化酸盐和循环碳酸盐候选物.
- 合成和评估了新的电解质特性,包括溶解,氧化抵抗和阻燃性.
主要成果:
- 成功设计和合成了具有快速充电能力的内在防火电解质.
- 优化的电解质在Na3V2(PO4) 3 (NVP) 细胞中在1.0°C下350个周期内显示出超过98%的容量保留.
- 实现了近100%的库伦比克效率,超过了基准碳酸盐系统.
结论:
- 描述器引导的框架为开发高速率,防火SIB电解质提供了一个合理的途径.
- 这种方法成功地突破了传统的扩散极限,并消除了电解质设计中的粗暴力选.
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