通过使用的铁酸盐电池的酸盐洗系统进行绿色和选择性回收
Jingjing Zhou1, Haoxuan Yu1, Yanrun Mei1
1Hubei Key Laboratory of Multi-media Pollution Cooperative Control in Yangtze Basin, School of Environmental Science & Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei 430074, China; Hubei Provincial Engineering Laboratory of Solid Waste Treatment, Disposal and Recycling, 1037 Luoyu Road, Wuhan, Hubei 430074, China.
Waste management (New York, N.Y.)
|October 17, 2025
概括
本研究介绍了一种高效的基于酸盐的漏系统,用于回收使用的铁酸盐 (LFP) 电池. 这种环保方法实现了高回收,并使正极材料的直接再生成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 铁酸盐 (LFP) 电池的市场份额不断增长,导致使用过的电池数量增加.
- 现有的LFP回收方法面临复杂的泄漏和环境污染的挑战.
研究的目的:
- 开发一种高效,经济的基于酸盐的浸出系统,用于从已使用的LFP电池中选择性回收.
- 解决当前回收技术的局限性,重点关注减少环境影响和简化流程.
主要方法:
- 使用氨二酸作为缓冲剂和过氧化用于选择性回收.
- 在温和的条件下 (65°C,20分钟) 进行了液,并分析了动力学和热力学.
- 通过固态合成利用回收的碳酸盐和铁酸盐残留物再生的正极材料.
主要成果:
- 实现了100%的选择性和95.78%的回收效率.
- 识别出浸出过程是以19.93 kJ/mol的激活能量控制的化学反应.
- 再生LFP阴极表现出色的性能 (158.72mAh·g-1在0.2C) 与高周期稳定性 (91.33%的保留400个周期后).
结论:
- 开发的以酸盐为基础的系统为LFP电池回收提供了传统酸的环保和高效替代方案.
- 这种方法大大减少了废弃物和加工步骤,促进了废弃LiFePO4电池的可持续回收.
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