在化物基所有固态金属电池中,硫化物的潜在替代品的合理设计
Tianrui Sun1, Qiuhan Wang2, Jiaxuan Liao1
1School of Material and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China; Yangtze Delta Region Institute (Quzhou), University of Electronic Science and Technology of China, Quzhou 313001, China.
Journal of colloid and interface science
|October 31, 2024
概括
研究人员将Li3Y(BrCl) 3 (LYBC) 确定为稳定的化物固态电解质,消除了对全固态金属电池中硫化物中间层的需求,以提高安全性和性能.
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:
- 化物固态电解质 (SE) 对全固态金属电池 (ASLMB) 是有前途的.
- 化物SE的低降解稳定性需要硫化物间层,使金属直接接触复杂化.
- 需要具有固有的稳定性的化物SE来取代硫化物缓冲器.
研究的目的:
- 系统地确定一种具有热力学稳定性,成本效益和离子导电性的化物SE.
- 为了使ASLMBs仅使用化物类型的SE,消除了硫化物中间层的要求.
- 为商业ASLMBs开发一个具有成本效益和稳定的电解质.
主要方法:
- 对化物SE进行稳定性和导电性的系统选.
- 理论计算以确定减少潜力.
- 使用Li3Y(BrCl) 3 (LYBC) 的对称电池和ASLMB的制造和测试.
主要成果:
- 确定Li3Y(BrCl) 3 (LYBC) 是一个有前途的候选物,其低降解潜力为0.58 V.
- 基于LYBC的对称细胞在0.255 mA cm-2.2时循环超过1000小时.
- ASLMBs证明了仅化物策略的可行性,减少LYBC保持离子导电性.
结论:
- LYBC是一种适合于ASLMB的化基SE的商业材料,可实现自我释放.
- 使用稳定化物SE的策略消除了对硫化物中间层的需求.
- 这项研究为开发更安全电池的先进化SE提供了新的方向.
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