硫化物和化物电解质的比较进展,用于完全固态电池的商业化
Mohamed Djihad Bouguern1, Ningaraju Gejjiganahalli Ningappa1, Karthik Vishweswariah1
1Department of Chemical and Materials Engineering, Concordia University, Montreal, QC, H3G 1M8, Canada.
Advanced materials (Deerfield Beach, Fla.)
|September 29, 2025
概括
全固态电池使用固体电解质 (SE) 来提高安全性和能量密度. 硫化SE提供高导电性,而化SE提供更好的稳定性和可制造性,建议为最佳性能量身定制的材料选择.
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:
- 与传统的离子电池 (LIB) 相比,全固态电池 (ASSB) 提供更高的安全性,能量密度和热稳定性.
- ASSB的性能严重依赖于固体电解质 (SE) 的特性,包括离子导电性,化学/物理稳定性和可制造性.
- 基于硫化物和化物的SE是下一代ASSB的两个主要候选者.
研究的目的:
- 为了比较硫化物和化物基固体电解质对ASSB的特性和潜在应用.
- 评估每种SE类型在导电性,稳定性,可加工性和可扩展性方面的优缺点.
- 为优化ASSB性能提供对材料选择的见解.
主要方法:
- 硫化物和化物固体电解质的比较分析.
- 材料属性的评估:离子导电性,激活能量,电压稳定性,湿度敏感性,机械特性和界面行为.
- 对工业应用的合成技术和可扩展性的评估.
主要成果:
- 硫化SE具有高室温离子导电性,低激活能量和良好的可加工性,但面临着高压阴极不稳定性,水分敏感性和潜在的H2S释放的挑战.
- 化物SE (特别是基于) 提供更好的环境友好性,电压稳定性和与氧化物正极相容性,新兴的高和氧化化学物质实现了显著的导电性.
- 尽管可扩展合成和干燥加工的进步,Halide SE公司面临着由于机械合规要求和稀有元素的使用而导致的整合和成本问题.
结论:
- 硫化SE显示出优越的离子导电性和金属兼容性,使其成为高性能应用的前景.
- 哈利德公司在稳定性和可制造性方面具有优势,正在进行的研究解决了导电性和成本挑战.
- 优化ASSB系统可能需要采用混合方法,利用硫化物和化物电解质的互补强度,或根据特定应用需求量身定制的材料选择,考虑到化物机械约束.
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