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没有添加电解质的纳米阳极,用于硫化物为基础的全固态离子电池

Xiao Xu¹, Qing Sun^1,2, Yuanyuan Li¹

¹State Key Laboratory of Advanced Welding and Joining, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China.

Small (Weinheim an der Bergstrasse, Germany)

|July 21, 2023

概括

研究人员开发了一种用LiAlO2涂层的新阳极,用于全固态离子电池 (ASSLB). 这项创新提高了电池的性能和寿命,为更安全,高能量密度的储能解决方案铺平了道路.

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:

全固态离子电池 (ASSLB) 对于高能量密度和安全至关重要.
阳极提供高容量,但受到体积扩张问题的困扰.
对于大规模的ASSLB应用,板式阳极是首选的.

研究的目的:

为ASSLBs开发一种稳定且高性能的板式阳极.
研究LiAlO2涂层对阳极性能的影响.
展示一种可扩展的方法来准备先进的ASSLB电极.

主要方法:

用LiAlO2层涂覆 (Si),以创建Si@LiAlO2电极.
使用没有硫化物电解质的传统泥涂层技术.
对Si@LiAlO2电极和全电池的电化学性能测试.

主要成果:

Si@LiAlO2 电极表现出由于保护层和离子导电层 LiAlO2 的增强电化学性能.
在150个循环中实现了高库伦比效率 (>80%) 和特定容量 (1205 mAh g-1).
全电池显示可逆容量为147 mAh g-1 ,在62个循环后保持80.2%的容量.

结论:

AlO2涂层有效地减轻了的体积膨胀,并改善了+扩散.
Si@LiAlO2电极为ASSLB制造提供了一种实用且可扩展的方法.
这项工作为开发持久,高绩效的ASSLB提供了一个有前途的途径.

关键词:

所有固态电池都是固态电池.离子导电涂层层的离子导电涂层阳极是一种阳极.硫化物电解质硫化物电解质

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