批量木阳极用于通过电解质化学调制启用的宽温度离子电池
Jing Zhou1, Yang Ding1, Yingyu Wang2
1School of Chemistry Engineering, School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China.
Journal of colloid and interface science
|December 9, 2023
概括
这项研究开发了一种用于离子电池 (SIB) 的新型电解质,可以在广泛的温度范围内实现稳定的性能,从-40°C到80°C,克服了以前的限制.
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:
- 离子电池 (SIB) 是下一代储能电池的前景.
- 在极端温度下性能恶化限制了当前的SIB应用.
- 开发稳定的宽温度电解质对于SIB的发展至关重要.
研究的目的:
- 为应对在极端温度下SIB性能恶化的挑战.
- 开发一种经过修改的电解质化学物质,用于稳定的宽温度SIB运行.
- 为了提高SIB电解质的电化学稳定性和离子传输特性.
主要方法:
- 使用2-甲基四水 (MeTHF) 和1,2-二次氧乙 (DME) 制备一种新型电解质.
- 研究电解质特性,包括Na+溶解和SEI层形成.
- 在不同温度下对Na3V2{\displaystyle Na3V2{\displaystyle Na3V2}{\displaystyle Na3V2}{\displaystyle Na3V2}{\displaystyle Na3V2}{\displaystyle Na3V2}{\displaystyle Na3V2}{\displaystyle Na3V2}{\displaystyle Na3V2}{\displaystyle Na3V2}{\displaystyle Na3V2}{\displaystyle Na3V2}{\displaystyle Na3V2}}{\displaystyle Na3V2}{\displaystyle Na3V2}{\displaystyle Na3V2}{\displaystyle Na3V2}{\displaystyle Na3V2}{\displaystyle Na3V2}{\displaystyle Na3V2}{\displaystyle Na3V2}{\displaystyle Na3V2}{\displaystyle Na3V2}{\displaystyle Na3V2}
主要成果:
- 新的电解质促进了富含NaF的固体电解质接口 (SEI) 层.
- 通过SEI层 (从291.2到89.6 meV) 减少了Na+运输的能量障碍.
- 稳定循环的NavigationBi半电池从-20°C到60°C,扩展限制到-40°C和80°C.
- 充满电池的电池在-20°C至60°C之间表现出稳定的运行.
结论:
- 设计的电解质在广泛的温度条件下实现稳定可靠的SIB性能.
- 这一战略显著扩大了SIB的运行温度范围,超出了当前的基准值.
- 这些发现为开发高性能,宽温度离子电池提供了有希望的途径.
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