通过多功能电解质添加剂使低温金属电池成为可能
Zhushun Zhang1, Zhiguang Zhang1, Quan Yuan1
1School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China. jiabaoli@yzu.edu.cn.
Chemical communications (Cambridge, England)
|November 6, 2025
概括
这项研究引入了三 (pentafluorophenyl) ,以防止酸 (THF) 在电池中的聚合. 这种添加剂提高了金属电池在低温下的稳定性和性能.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 电池技术 电池技术
背景情况:
- 甲基 (THF) 是用于金属电池的有前途的低温溶剂.
- 在THF中的微量水可以启动环开放聚合,导致凝结,导电性损失和差的界面动力学.
研究的目的:
- 开发一种方法来抑制金属电池中的THF聚合.
- 为了提高低温下金属电池的稳定性和性能.
主要方法:
- 引入三 (pentafluorophenyl) 作为一个聚合抑制剂.
- 对沉积/脱落进行电化学测试.
- 在20°C下对Na3V2(PO4) 3/Na全细胞的循环性能评估.
主要成果:
- 三 (五) 烯有效抑制了THF的聚合.
- 在2.0 mA cm-2下达到稳定的沉积/剥离,在-20 °C下持续1000小时.
- 在1000个循环以10.0 A g-1和-20 °C的温度后,Na3V2(PO4) 3/Na充满电池保持了66.0 mAh g-1.
结论:
- 三 (pentafluorophenyl) 是一种有效的添加剂,用于稳定金属电池中的THF基电解质.
- 该策略显著提高了金属电池的低温性能和循环稳定性.
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