为了回收使用硫化电解质的全固态电池:了解基于溶解的分离过程中的电解质和电极降解
Kerstin Wissel1, Zian Hu1, Xuebin Wu1
1Institute for Materials Science, Chemical Materials Synthesis, University of Stuttgart, Heisenbergstraβe 3, 70569, Stuttgart, Germany.
ChemSusChem
|January 7, 2025
概括
本研究探讨了通过溶解和回收 argyrodite 电解质和过渡金属氧化物来回收全固态离子电池 (ASSB). 这些发现揭示了可持续的ASSB循环过程的潜力.
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
- 可持续能源 可持续能源
背景情况:
- 全固态离子电池 (ASSB) 正在快速发展,由于其高离子导电性,氧化硫酸 (Li6PS5X) 作为固体电解质具有前景.
- 尽管业绩有所提高,但ASSB的可持续性和回收是循环经济倡议的关键,但未被充分探索的挑战.
研究的目的:
- 为了研究基于溶解的分离和回收 argyrodite thiophosphate 电解质和过渡金属氧化物电极用于ASSB回收.
- 分析溶剂处理对 argyrodite 再结晶和与电极材料的相互作用的影响.
- 评估这些相互作用对电解质和电极的功能性质的影响.
主要方法:
- 基于溶解的分离和回收技术.
- 溶剂处理对电解质再结晶的影响分析.
- 研究溶解电解质与各种过渡金属氧化物电极 (LiCoO2,LiMn2O4,NMC,LFP,LTO) 之间的相互作用.
- 使用XRD,SEM,EDS,ICP-MS和XPS进行表征.
主要成果:
- 展示了一种从ASSB中分离和回收 argyrodite电解质和过渡金属氧化物的方法.
- 鉴定了溶剂对阿尔吉罗的再结晶行为的影响.
- 描述了溶解电解质和电极材料之间的相互作用,并注意到结构,组成和形态变化.
- 提供了关于这些相互作用如何影响回收组件的功能性质的数据.
结论:
- 回收ASSB具有复杂性,特别是在电解质和电极材料相互作用方面.
- 该研究强调了为ASSB开发高效和可持续的回收过程的潜力.
- 进一步的研究可以优化溶解和回收方法,以提高电池技术的循环性.
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