废旧磷酸铁锂电池正极材料修复再生技术研究进展  

Research progress on the repair and regeneration technology of cathode materials from spent LiFePO_(4) batteries

作　　者：闫洪远 刘志华[1,2] 李紫龙 焦乙枭[1] 罗丹 于鉴兰 Yan Hongyuan;Liu Zhihua;Li Zilong;Jiao Yixiao;Luo Dan;Yu Jianlan(Science&Technology Branch of Chongqing Yuanda Air Pollution Control Franchise Co.,Ltd.,Chongqing 401122;School of Energy and Power Engineering,Chongqing University,Chongqing 400044)

机构地区：[1]重庆远达烟气治理特许经营有限公司科技分公司,重庆401122 [2]重庆大学能源与动力工程学院,重庆400044

出　　处：《化工新型材料》2024年第12期44-49,共6页New Chemical Materials

基　　金：国家电力投资集团有限公司科技项目(KY-C-2023-YDKJ-001)。

摘　　要：回收利用废旧磷酸铁锂电池是目前研究人员广泛关注的问题。与提取有价金属为目标的湿法、火法冶金技术相比,正极材料的修复再生技术具有能耗低、流程短以及更加环保的优势。由于其稳定的橄榄石晶体结构和高价值金属含量低,废旧磷酸铁锂电池正极材料的修复再生是一种经济的选择。综述了以物理法、热处理法、化学法为代表的3种预处理方式研究现状,总结了废旧磷酸铁锂电池正极材料修复再生方法的技术进展,包括高温固相再生、水热合成法、电化学法,分析了目前修复再生技术存在的问题并提出了相关建议。The recycling of spent LiFePO_(4) batteries is a topic that researchers have paid extensive attention to.Compared with the hydrometallurgy and pyrometallurgy technologies for the purpose of extracting valuable metals,the repair and regeneration technology has the advantages of low energy consumption,short process and more environmentally friendly.Due to its stable olivine crystal structure and low content of high-value metals,the repair and regeneration of spent LiFePO_(4) battery cathode materials is an economic option.The latest research status of three pretreatment methods represented by physical method,thermal treatment method and chemical method was reviewed.The technological progress in the repair and regeneration methods of cathode materials of spent LiFePO_(4) was summarized,including high temperature solid-phase regeneration,hydrothermal synthesis method and electrochemical method.The existing problems in the repair and regeneration technology of spent LiFePO_(4) battery cathode materials were analyzed,and suggestions were put forward.

关 键 词：废旧磷酸铁锂电池 固相再生 水热合成 电化学 

分 类 号：X777[环境科学与工程—环境工程]