六盘水师范学院学报2025，Vol.37Issue(3)：40-46,7.DOI:10.16595/j.1671-055X.2025.03.004
三价铁源与不同磷源反应制备电池级磷酸铁的实验研究
Experimental Study on both Preparation of Battery Grade Iron Phosphate from Different Phosphorus Sources and Trivalent Iron Source
摘要
Abstract
Iron(Ⅲ)phosphate is a key precursor for the preparation of Lithium iron phosphate as cathode material for lithi-um ion batteries.The experiment,of which the Iron(Ⅲ)phosphate is prepared by trivalent iron and different phosphorus sources,shows the key factor affecting the preparation of ferric phosphate by the reaction of Fe with different phosphorus sources P,NP,HP.And P is pH value.When FeCl3 is mixed with H3PO4、(NH4)2,HPO4 in equal quantities,iron phosphate precipitation cannot be directly generated due to the PH value is lower than 3.And it is necessary to add ammonia water to adjust the pH to be great-er than 3 to generate iron phosphate.When FeCl3 is mixed with(NH4)2HPO4,Na3PO4 in equal amounts,the pH value is greater than 3.And the precipitation of iron phosphate can be produced without adjusting the pH.When FeCl3 is mixed with Na3PO4 equivalently,FeO(OH)impurities will be produced,and the product can not meet the battery level standard.When FeCl3 is mixed with(NH4)2HPO4equivalently.The pH value is about 3.And the products will meet the requirements of battery grade iron phosphate.关键词
磷酸铁/三价铁源/不同磷源/pH值/一步沉淀法Key words
Iron(Ⅲ)phosphate/Trivalent iron source/Different phosphorus source/pH/One-step precipitation method分类
化学工程引用本文复制引用
李济澜,马佳柔,唐回..三价铁源与不同磷源反应制备电池级磷酸铁的实验研究[J].六盘水师范学院学报,2025,37(3):40-46,7.基金项目
贵州省科技厅技术基金项目"微杂质环境中单晶Li演变机理及在低品位红土矿材料化增值冶金的应用研究"(黔科合基础-ZK[2022]一般531) （黔科合基础-ZK[2022]一般531）
贵州省教育厅基金项目"贵州省高等学校煤炭产业碳中和工程研究中心"(黔教技[2023]044号) （黔教技[2023]044号）
六盘水师范学院高层次人才科研启动基金项目"新型高能量密度锌基二次电池研究"(LPSSYKYJJ202006). （LPSSYKYJJ202006）
