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脂肪酸甲基乙乙酸盐添加剂,用于提高高温水性离子电池性能
Xiaoxi Zhao1,2, Bingjun Yang1,2, Qunji Xue1
1Research Center of Resource Chemistry and Energy Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
The Journal of chemical physics
|April 1, 2025
概括
研究人员开发了一种用于水性离子电池 (AZIB) 的新添加剂,以提高在高温下性能和稳定性. 这种电解质修改增强了阳极.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 水性离子电池 (AZIB) 提供高容量,低成本和安全性.
- 实际使用受到电解质分解,腐蚀和树生长的限制,特别是在高温下.
研究的目的:
- 开发一种用于高温AZIB的新型电解质添加剂.
- 为了提高阳极的界面稳定性和循环性能.
主要方法:
- 用脂肪酸甲基乙氧酸盐 (FMEE) 修改电解质.
- 调查FMEE在调节溶解结构和稳定水群中的作用.
- 分析固体电解质间相 (SEI) 组成和形态.
主要成果:
- 添加FMEE抑制了副作用,并促进了强大的SEI层,富含ZnS和ZnF2.
- 修改后的阳极的循环寿命高达3000小时.
- 带有FMEE的Zn-V2O5全细胞显示出出色的速度能力和循环稳定性,即使在60°C.
结论:
- FMEE是一种有效的添加剂,可以改善AZIB中阳极的界面化学稳定性.
- 修改后的电解质增强了AZIBs的热稳定性和整体性能.
- 这一战略为开发高性能,耐温度的AZIB提供了一条途径.
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