通过有效的替代,降解Li2ZrCl6电解质在潮湿的空气中的演变,并增强空气稳定性
Xuming Luo1, Xiaoyu Hu1, Yu Zhong1
1State Key Laboratory of Silicon and Advanced Semiconductor Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
Small (Weinheim an der Bergstrasse, Germany)
|October 26, 2023
概括
超离子化物电解质如Li2ZrCl6在空气中降解. 兴奋剂提高了空气稳定性和离子导电性,使其能够用于固态电池.
科学领域:
- 固态电解质 固态电解质
- 材料科学 是一种材料科学.
- 电化学 电化学 电化学
背景情况:
- 超离子化物,如二化 (Li2ZrCl6),是有前途的固体电解质.
- 然而,由于空气和水分稳定性差,它们的实际应用受到阻碍.
- 降解机制和提高稳定性的策略需要深入研究.
研究的目的:
- 研究Li2ZrCl6.6的水分不稳定性和分解机制.
- 探索印兴奋剂对Li2ZrCl6.6的结构,空气稳定性和离子导电性的影响.
- 为了证明在固态电池中应用稳定于空气的胺化物.
主要方法:
- 在暴露于水分下的Li2ZrCl6分解的演示.
- 分解产品的特征及其随时间的演变.
- 通过滚球磨砂将胺转化为Li2ZrCl6.
- 对杂电解质的晶体结构和离子导电性的分析.
- 制造和测试一个固态电池,利用优化的化化物.
主要成果:
- Li2ZrCl6在暴露于水分后分解成各种氧化物和化物,造成不可逆转的结构损伤.
- 兴奋剂将晶体结构从类似Li3YCl6的转变为类似Li3InCl6的.
- 在添加的Li2ZrCl6中,离子导电性得到增强,达到 (0.7681.13) × 10−3 S cm−1.
- 最佳的Li2.8Zr0.2In0.8Cl6表现出改善的空气稳定性,形成可逆化物水合物.
- 一个使用再加热Li2.8Zr0.2In0.8Cl6的固态电池成功运行.
结论:
- 清晰地证明了Li2ZrCl6的空气和水分不稳定性,并阐明了其分解途径.
- 兴奋剂是一种有效的策略,可以增强超离子化物的空气稳定性和离子导电性.
- 开发的稳定于空气的印化酸电解质显示出在固态电池中的应用潜力.
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