阳极
阴极
材料科学
化学工程
箔法
重新使用
电解质
电化学
石墨
浸出(土壤学)
炭黑
废物管理
复合材料
电极
化学
环境科学
工程类
土壤水分
天然橡胶
土壤科学
物理化学
作者
Xuelei Li,Jin Zhang,Dawei Song,Jishun Song,Lianqi Zhang
标识
DOI:10.1016/j.jpowsour.2017.01.118
摘要
A new green recycling process (named as direct regeneration process) of cathode material mixture from scrapped LiFePO4 batteries is designed for the first time. Through this direct regeneration process, high purity cathode material mixture (LiFePO4 + acetylene black), anode material mixture (graphite + acetylene black) and other by-products (shell, Al foil, Cu foil and electrolyte solvent, etc.) are recycled from scrapped LiFePO4 batteries with high yield. Subsequently, recycled cathode material mixture without acid leaching is further directly regenerated with Li2CO3. Direct regeneration procedure of recycled cathode material mixture from 600 to 800 °C is investigated in detail. Cathode material mixture regenerated at 650 °C display excellent physical, chemical and electrochemical performances, which meet the reuse requirement for middle-end Li-ion batteries. The results indicate the green direct regeneration process with low-cost and high added-value is feasible.
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