客溶剂对金属有机框架的半固体电解质的离子导电性和电化学性能的影响
Hagar K Hassan1,2,3,4, Paul Hoffmann3, Timo Jacob1,2,3
1Department of Electrochemistry II and Theory I, Helmholtz Institute of Ulm (HIU), Helmholtz Str. 11, 89081, Ulm, Germany.
ChemSusChem
|October 27, 2023
概括
开发有效的电解质是可充电电池的关键. 在准备半固体电解质之前,疏散MOF结构对于低过电潜至关重要,无论离子导电率如何.
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:
- 可充电电池需要先进的电解质.
- 金属有机框架 (MOF) 是有前途的固体电解质.
- 电解质性能取决于客溶剂和Mg电极的稳定性.
研究的目的:
- 研究客溶剂对基于MOF的固体电解质 (MOFsSEs) 的影响.
- 确定实现低过量的关键因素.
- 分析沉积/溶解的阳极/MOFsSEs接口行为.
主要方法:
- 使用MOFs制备半固体电解质 (sSE).
- 电化学阻抗光谱学 (EIS). 电化学阻抗光谱学.
- 循环电压测量 (CV) 和静电测量.
主要成果:
- 对于低Mg过量的潜能,MOF结构的完全疏散至关重要.
- 的沉积/溶解行为受到MOF结构,盐离子和客溶剂的影响.
- 仅仅是离子导电性并不能保证低超电位.
结论:
- 优化MOF结构和溶剂选择对于可充电电池至关重要.
- 了解界面行为是提高Mg电池性能的关键.
- MOFsSE为下一代能源存储提供了一个有前途的途径.
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