磷酸锰铁锂正极材料研究进展  

Research progress of lithium manganese iron phosphate cathode materials

作　　者：刘帅杰 孙妍 邓子昭 Liu Shuaijie;Sun Yan;Deng Zizhao(Yangfeng Chuyuan New Energy Technology Co.,Ltd.,Jingmen Hubei 448000,China;College of Environmental Science and Engineering,Nankai University,Tianjin 300350,China;Xinyangfeng Agricultural Technology Co.,Ltd.,Jingmen Hubei 448000,China)

机构地区：[1]洋丰楚元新能源科技有限公司,湖北荆门448000 [2]南开大学环境科学与工程学院,天津300350 [3]新洋丰农业科技股份有限公司,湖北荆门448000

出　　处：《化工矿物与加工》2024年第4期24-32,共9页Industrial Minerals & Processing

摘　　要：作为锂离子电池正极材料之一,磷酸锰铁锂具有能量密度大、安全性好、成本较低等优点,被认为是磷酸铁锂理想的升级品。但是,磷酸锰铁锂较低的电导率和Li^(+)扩散系数限制了其商业化应用。介绍了磷酸锰铁锂材料性能,总结了高温固相法、共沉淀法、溶胶凝胶法、水热/溶剂热法等合成方法的优缺点,综述了碳包裹、纳米化及形貌控制、离子掺杂等改性策略,指出磷酸锰铁锂材料应具有一个合适的锰铁原子数量比;在总结前人研究成果的基础上,展望了未来磷酸锰铁锂正极材料的研究方向。As one of the cathode materials for lithium ion batteries,lithium manganese phosphate has the advantages of high energy density,good safety and low cost,and is considered as the ideal upgrade of lithium iron phosphate.However,the low conductivity and Li^(+)diffusion coefficient of lithium manganese phosphate limit its commercial application.The properties of lithium manganese phosphate material were introduced,and the advantages and disadvantages of synthesis method such as high temperature solid state method,coprecipitation method,sol-gel method and hydrothermal/solvothermal method were summarized.the modification strategies such as carbon coating,nanocrystallization,morphology control and ion doping were summarized.It was pointed out that lithium manganese phosphate materials should have a suitable atomic ratio of manganese and iron.On the basis of summarizing previous research achievements,the future research directions of lithium manganese phosphate cathode materials were prospected.

关 键 词：正极材料 磷酸锰铁锂 合成方法 改性策略 锰铁原子数量比 碳包裹 离子掺杂 

分 类 号：TQ137.1[化学工程—无机化工]