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直接的热水再生和高附加值利用废用的铁酸盐,从酸性液中优先提取

Shiyu Zhou¹, Qiang Li², Penglin Wang¹

¹National Engineering Research Center for Integrated Utilization of Salt Lake Resources, East China University of Science and Technology, Shanghai 200237, China; Joint International Laboratory for Potassium and Lithium Strategic Resources, East China University of Science and Technology, Shanghai 200237, China; School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.

Waste management (New York, N.Y.)

|September 19, 2025

概括

研究人员从废旧电池中重新利用降解的铁酸盐 (LFP) 成为提取的有效吸附剂. 这种方法解决了短缺问题,并促进了电池回收的循环经济.

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
环境科学环境科学

背景情况:

通过网格重建直接再生退化的电池阴极是回收使用过的离子电池 (LIB) 的生态有效策略.
由于残留缺陷和再生材料中补充不足,工业采用面临挑战.
需要一种新的方法来提高回收LIB组件的价值和实用性.

研究的目的:

开发一种高价值的再利用途径,用于从消耗的LIB中再生的铁酸盐 (LFP).
将LFP重新用作一种酸稳定的吸附剂,用于从酸性液中有效地提取.
建立一种可持续的升级循环利用LIB材料的方法,使经济可行性与循环经济原则保持一致.

主要方法:

再生LFP通过220°C的2小时的热水修复过程合成,使用 Askorbic 酸作为减少剂.
用热力学和电化学分析来理解格子重建机制.
评估了再生LFP作为提取吸附剂的性能.

主要成果:

再生后的LFP表现出了38.5mg/g的特殊提取能力.
该材料表现出高稳定性,防止在提取过程中电极溶解.
液中的残留量被选择性地降低到低于20 ppm.

结论:

将再生的LFP作为吸附剂重新使用,为高价值的废弃LIB材料的利用提供了开创性的途径.
这种方法可以从酸性液中提取高效和有选择性的优先,解决资源稀缺问题.
开发的范式为回收利用的LIBs提供了一个蓝图,将经济效益与循环经济原则相结合.

关键词:

直接的热水再生直接的热水再生高价值的利用方式优先提取的提取.使用过的铁酸盐.

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