从离子电池中电气提取
Katarzyna Łacinnik1,2, Szymon Wojciechowski2, Wojciech Mikołajczak2
1Department of Inorganic Chemistry, Analytical Chemistry, and Electrochemistry, Faculty of Chemistry, Silesian University of Technology, 44-100 Gliwice, Poland.
Materials (Basel, Switzerland)
|December 31, 2025
概括
回收使用的离子电池 (LIB) 对可持续性至关重要. 这项研究优化了LIB废物中的电沉积,通过稳定电解质来实现高纯度和高效率,证明了有效的循环经济方法.
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
- 环境工程 环境工程
背景情况:
- 对离子电池 (LIB) 的需求增加产生了大量的危险废物.
- 液体金回收提供了一种可持续的替代原始采矿的替代方案,以回收关键金属.
- 有效地管理消耗的LIBs对于循环经济原则至关重要.
研究的目的:
- 开发一种高效的方法,从LIB"黑质量"的硫酸盐漏溶液中回收金属.
- 优化电沉积参数,以提高沉积质量和工艺效率.
- 评估电解质稳定对回收的影响.
主要方法:
- 在一个不钢阴极上使用Ti/Ru-Ir阳极进行了电.
- 两种工艺变体进行了比较:降低Ni2+度 (变体A) 和稳定Ni2+度与添加剂 (变体B).
- 电解质参数包括温度 (60°C) 和pH (3.0-4.5).
主要成果:
- 变体A产生了60-88%的电流效率与不均的,脱皮沉积物.
- 变种B,使用稳定Ni2+ (35-40gL-1) 和添加剂 (PEG-4000,HBO3,Na) 实现了78-93%的效率.
- 变种B产生的均,明亮的沉积 (>90%的纯度,厚度高达0.5毫米).
结论:
- 稳定的度和修改电解质组成显著提高电沉积质量和经济性.
- 电解是一种可行且高效的处理LIB废物的方法.
- 这一过程有助于在材料循环中关闭循环,支持可持续的电池回收.
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