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使用白废物和二酸的LiFePO₄阴极材料的清洁和高效合成

Qingyuan Lei¹, Kanggen Zhou¹, Xuekai Zhang¹

¹School of Metallurgy and Environment, Central South University, Changsha 410083, China.

Waste management (New York, N.Y.)

|December 15, 2023

概括

本研究提出了一种具有成本效益的方法,从白废物中制造铁酸盐 (LiFePO4) 阴极材料. 该过程净化铁,并最大限度地减少废物,为电池产生高性能LiFePO4.

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:

二氧化生产产生大量的白废物.
这些废物构成了环境挑战和潜在的资源.
开发废物回收利用方法对于可持续性至关重要.

研究的目的:

开发一种成本效益高的方法,从白废物中制备LiFePO4阴极材料.
为了实现资源回收和减少与工业废物相关的环境风险.
为了克服废物利用中的杂质去除的挑战.

主要方法:

用二酸处理白废物的热水处理.
液的净化以丰富铁含量并去除杂质 (Ti,Al).
铁酸盐 (FePO4) 前体和随后的 LiFePO4 制剂的合成.

主要成果:

从液中成功去除了99.9%的Ti和98.36%的Al.
合成的FePO4前体具有高纯度 (Fe:29.47%,P:17.08%,Fe/P摩尔比率:0.986).
LiFePO4阴极材料的初始放电容量在0.1C时为160.6 mAh/g,循环稳定性良好.

结论:

从工业废物中合成LiFePO4的一个简单和成本效益的方法被证明.
该方法有效地净化铁,并最大限度地减少材料损失.
该战略为从固体废物中生产电池材料提供了一个可持续的途径.

关键词:

铁酸盐是一种铁酸盐.阶段转换阶段转换资源回收利用资源回收利用白废弃物是一种白废弃物.

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