废旧磷酸铁锂电池正极材料回收技术研究进展OA

With the rapid development of lithium-ion power battery industry in China,the recycling of large-scale retired batteries has become a critical link in promoting the sustainable development of the new energy vehicle industry.The recycling of cathode materials from spent lithium iron phosphate batteries,as a current research focus,is of great significance for resource circulation and environmental protection.This study systematically reviews recent research progresses in the recycling technologies for spent lithium iron phosphate cathode materials,both domestically and internationally,covering three main routes:direct regeneration,pyrometallurgy,and hydrometallurgy.This study particularly analyzed the key aspects of hydrometallurgy,such as the leaching of valuable elements,deep removal of impurities,and product regeneration.Moreover,the advantages and limitations of various methods were critically compered.In response to core issues in the current recycling process,such as insufficient high-value utilization of iron and phosphorus resources and difficulties in the deep removal of impurities,this study proposed corresponding suggestions and technical prospects,aiming to provide theoretical references and engineering insights for promoting efficient,clean,and high-value-added recycling of spent lithium iron phosphate batteries.