Synthesis of Sub-micrometer Lithium Iron Phosphate Particles for Lithium Ion Battery by Using Supercritical Hydrothermal Method

张艳洁; 杨艳芳; 王学勇; 李帅三

doi:10.1016/S1004-9541(14)60051-3

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Synthesis of Sub-micrometer Lithium Iron Phosphate Particles for Lithium Ion Battery by Using Supercritical Hydrothermal Method

研究简报 | Updated：2026-01-06

- Synthesis of Sub-micrometer Lithium Iron Phosphate Particles for Lithium Ion Battery by Using Supercritical Hydrothermal Method
- Chinese Journal of Chemical Engineering Vol. 22, Issue 2, Pages: 234-2371004-954160051-3(2014)
- Affiliations：
  
  2 The 209th Hospital of People's Liberation Army,Mudanjiang,China,157011
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(14)60051-3
  CLC：
- Published：2014
- Accepted：
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ZHANG Yanjie, YANG Yanfang, WANG Xueyong, LI Shuaisan. Synthesis of Sub-micrometer Lithium Iron Phosphate Particles for Lithium Ion Battery by Using Supercritical Hydrothermal Method[J]. Chin.J.Chem.Eng., 2014, 22(2): 234-237.
DOI：

ZHANG Yanjie, YANG Yanfang, WANG Xueyong, LI Shuaisan. Synthesis of Sub-micrometer Lithium Iron Phosphate Particles for Lithium Ion Battery by Using Supercritical Hydrothermal Method[J]. Chin.J.Chem.Eng., 2014, 22(2): 234-237. DOI： 10.1016/S1004-9541(14)60051-3.

摘要

Abstract

A supercritical hydrothermal method was employed to prepare sub-micrometer LiFePO

particles with high purity and crystallinity. The structure and morphology of LiFePO

particles were characterized by X-ray diffraction and scanning electron microscope. The electrochemical tests were carried out to determine the reversible capacity

rate and cycling performance of the LiFePO

particles as cathode material for lithium ion battery. Experimental results show that solvent and calcining time have significant effects on purity

size and morphology of LiFePO

particles. Mixed solvent contained deionized water and ethanol is conducive to synthesize smaller and more uniform particles. The size of LiFePO

particles as-prepared is about 100-300 nm. The specific discharge capacities of the LiFePO

particles are 151.3 and 128.0 mA·h·g

-1

after first cycle at the rates of 0.1 and 1.0 C

respectively. It retains 95.0% of the initial capacity after 100 cycles at 1.0 C.

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