稳定的金属阳极的Li2OHCl晶体电解质
Zachary D Hood1, Hui Wang, Amaresh Samuthira Pandian
1School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332, United States.
Journal of the American Chemical Society
|January 23, 2016
概括
一种新型的固体电解质化 (Li2OHCl) 与金属阳极形成稳定的接口. 这种材料提供了低温加工和优良的稳定性,
科学领域:
- 材料科学
- 电化学
- 固态化学
背景情况:
- 固体电解质对于安全高效的电池至关重要.
- 目前的固体氧化物电解质需要高加工温度 (> 1600 °C).
- 为金属阳极开发稳定的固体电解质仍然是一个挑战.
研究的目的:
- 研究与金属形成稳定的固体电解质间相 (SEI).
- 探索 Li2OHCl 固体电解质的低温合成和特性.
- 评估Li2OHCl与金属的电化学稳定性.
主要方法:
- 氧化物 (LiOH) 和化 (LiCl) 前体的简单混合.
- 在温和的温度下加工 (<400°C).
- 离子导电率和阿雷尼乌斯激活能量的表征.
主要成果:
- 在400°C以下制造的Li2OHCl固体电解质膜.
- 具有增加晶体缺陷的Li2OHCl具有最高的离子导电性.
- 在Li2OHCl和金属阳极之间观察到稳定的SEI层形成.
- 甚至超过金属的点.
结论:
- 2OHCl是金属电池的一个有前途的固体电解质.
- 低温加工可以大大降低制造成本.
- 形成SEI层是界面稳定的关键,使电池运行更安全.
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