从使用的离子电池中回收阴极材料的闭环循环循环回收,通过协作漏和直接再生方法
Yuanpeng Fu1, Xianshu Dong2, Yuping Fan2
1Taiyuan University of Technology, School of Mining Engineering, Taiyuan 030024, Shanxi, China; State Key Laboratory of Mineral Processing, Beijing 100044, China; Key Laboratory of Coal Processing and Efficient Utilization, (China University of Mining and Technology), Ministry of Education, Xuzhou 221116, Jiangsu, China.
Journal of environmental management
|April 4, 2025
概括
通过再生阴极材料,有效地回收离子电池. 这个过程可以回收像,和这样的贵重金属,为可持续的电池生产创造高性能电极材料.
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
- 化学工程是化学工程的重要组成部分.
背景情况:
- 使用过的离子电池 (LIB) 带来了环境挑战,并代表了关键金属的损失.
- 对LIBs需求的增长加剧了对,和等关键金属的供需不平衡.
研究的目的:
- 开发和研究一种直接再生机制,用于使用过的LIBs的三元阴极材料.
- 优化预处理,金属洗和现场再组合过程,以有效地回收材料.
主要方法:
- 减少使用过的LIB阴极材料的烤,以形成金属氧化物.
- 酸浸出用于提取贵金属 (Ni,Mn,Co).
- 循环回收的正极材料的现场再生和表征.
主要成果:
- 在优化条件下 (40分钟,80°C) 实现了高水效率:Ni (91.27%),Mn (87.45%),Co (88.57%).
- 再生的正极材料表现出优良的结构性质:高球性,均的颗粒大小,完整的分层α-NaFeO2结构,低阴离子混合.
- 电化学性能显示可逆放电容量为143.7 mAh/g (第一周期) 和50个周期后137.2 mAh/g (94.8%的保留率).
结论:
- 直接再生过程是有效的生产高质量的阴极材料从消耗的LIBs.
- 再生材料显示出有前途的电化学性能,适合商业电极应用.
- 这种回收策略为LIB废物管理提供了一个可持续,清洁和绿色的途径.
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