金二氧化的双和二氧化对高性能全固态金属电池的双
Ziling Jiang1, Yujie Xiao1, Lin Li1
1State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
ChemSusChem
|November 7, 2024
概括
甲化物兴奋剂增强了富含的氧化电解质,改善了空气稳定性和金属接口,以提高电池性能. 这种新的方法解决了超声波导体应用中的关键局限性.
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
- 固态化学 固态化学
背景情况:
- 富含的 argyrodite 电解质显示出对高离子导电的承诺.
- 由于空气稳定性差以及金属接口问题,实际应用受到阻碍.
研究的目的:
- 为了研究甲化物 (BiF3) 作为修改 argyrodite 电解质的多功能剂.
- 评估BiF3兴奋剂对离子导电性,空气稳定性,临界电流密度和界面稳定性的影响.
主要方法:
- 化氧化电解质的合成:Li5.54P0.98Bi0.02S4.5Cl1.44F0.06 (LPBiSClF0.06). 这种电解质的合成方法是:
- 离子导电性,防空/防潮性和电化学性能的表征.
- 使用现场技术分析金属/电解质接口.
主要成果:
- 化电解质 (LPBiSClF0.06) 的离子导电率高,为5.37 mS cm−1.1.
- 通过BiS45−和LiBiS2相的形成,BiF3注增强了对空气/水分的抗性.
- 由于 LiF 和 Li-Bi 合金在接口的现场形成,临界电流密度翻了一番,达到 2.1 mA cm−2.
结论:
- BiF3 兴奋剂有效地提高了富含的 argyrodite 电解质的稳定性和性能.
- 修改后的电解质可以实现稳定的金属接口,这对于先进的电池应用至关重要.
- 组装后的电池表现出更好的循环稳定性,在100个循环后保持78.4%的容量.
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