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REWAS 2019 pp 411-420 | Cite as

Study of Precursor Preparation of Battery-Grade Lithium Iron Phosphate

  • Li-li Zhang
  • Wei-guang Zhang
  • Ting-an ZhangEmail author
  • Qiu-yue Zhao
  • Ying Zhang
  • Jing Liu
  • Kun Wang
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

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 FePO4·2H2O, 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 FePO4·2H2O with a median diameter of 38.4 μm was acquired through the condition of pH = 2, T = 25 °C, and t = 12 h, which meets the requirements for preparation of lithium iron phosphate and realizes high value-added utilization of discarded resources.

Keywords

Iron phosphate Precursor Lithium iron phosphate Median diameter 

Notes

Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (No. 51504059), the Fundamental Research Funds for the Central Universities (No. N162504016).

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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Li-li Zhang
    • 1
  • Wei-guang Zhang
    • 1
  • Ting-an Zhang
    • 1
    Email author
  • Qiu-yue Zhao
    • 1
  • Ying Zhang
    • 1
  • Jing Liu
    • 1
  • Kun Wang
    • 1
  1. 1.Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores of Ministry of EducationSpecial Metallurgy and Process Engineering Institute, School of Metallurgy of Northeastern UniversityShenyangChina

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