Study of Precursor Preparation of Battery-Grade Lithium Iron Phosphate

被引：1

作者：

Zhang, Li-li ^{[1
]}

Zhang, Wei-guang ^{[1
]}

Zhang, Ting-an ^{[1
]}

Zhao, Qiu-yue ^{[1
]}

Zhang, Ying ^{[1
]}

Liu, Jing ^{[1
]}

Wang, Kun ^{[1
]}

机构：

[1] Northeastern Univ, Key Lab Ecol Met Multimetal Intergrown Ores, Minist Educ, Special Met & Proc Engn Inst,Sch Met, Shenyang 110819, Liaoning, Peoples R China

来源：

REWAS 2019: MANUFACTURING THE CIRCULAR MATERIALS ECONOMY | 2019年

基金：

中国国家自然科学基金;

关键词：

Iron phosphate; Precursor; Lithium iron phosphate; Median diameter; ELECTROCHEMICAL PERFORMANCE; ELECTRODE PERFORMANCE; CATHODE MATERIAL; FEPO4;

D O I：

10.1007/978-3-030-10386-6_48

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this paper, ferric sulfate was extracted from titanium white waste acid as the iron source of lithium iron phosphate precursor. The ferric sulfate obtained from titanium white waste acid, ammonium phosphate tribasic, and ammonia hydroxide were used as raw materials through liquid precipitation method to obtain iron phosphate as the precursor of lithium iron phosphate. Under the premise of ensuring the synthesis of FePO4 center dot 2H(2)O, the effects of the pH, synthesis temperature and reaction time on the particle size of the resulting product were investigated. The results showed that high purity amorphous FePO4 center dot 2H(2)O with a median diameter of 38.4 mu m was acquired through the condition of pH = 2, T = 25 degrees C, and t = 12 h, which meets the requirements for preparation of lithium iron phosphate and realizes high value-added utilization of discarded resources.

引用

页码：411 / 420

页数：10

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