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磷酸锰铁锂正极材料研究进展OA

Research progress of lithium manganese iron phosphate cathode materials

中文摘要英文摘要

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 appli-cation.The properties of lithium manganese phosphate material were introduced,and the advantages and disadvanta-ges of synthesis method such as high temperature solid state method,coprecipitation method,sol-gel method and hy-drothermal/solvothermal method were summarized.the modification strategies such as carbon coating,nanocrystalli-zation,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.

刘帅杰;孙妍;邓子昭

洋丰楚元新能源科技有限公司,湖北 荆门 448000||新洋丰农业科技股份有限公司,湖北 荆门 448000南开大学 环境科学与工程学院,天津 300350

化学工程

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

cathode materiallithium manganese iron phosphatesynthesis methodmodification strategymanga-nese iron atomic ratiocarbon wrappingion doping

《化工矿物与加工》 2024 (004)

24-32 / 9

10.16283/j.cnki.hgkwyjg.2024.04.004

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