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Ionics

, Volume 25, Issue 12, pp 5633–5642 | Cite as

Effect of spray drying technological conditions on the performance of LiFePO4/C cathode materials with high energy density

  • Ruqian Ding
  • Hao Liu
  • Li Wang
  • Guangchuan LiangEmail author
Original Paper

Abstract

Lithium iron phosphate/carbon (LiFePO4/C) composites with high energy density were synthesized by wet ball milling, spray drying, and carbothermal reduction method. The effect of spray drying technological conditions on the performance of LiFePO4/C composites was systematically investigated. The samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), electrochemical impedance spectroscopy (EIS), and galvanostatic charge/discharge tests, etc. The results show that all as-prepared LiFePO4/C composites have a well-ordered olivine structure and spherical morphology. Compared with centrifugal spray drying technology, LiFePO4/C prepared by pressure spray has a smaller particle size and exhibits more uniform particle size distribution as well as better electrochemical performance. However, as the particle size of LiFePO4/C microspheres is decreased, the sphericity of particles becomes worse and tap density of materials steps down, resulting in poor processability in 14500 cylindrical battery.

Keywords

LiFePO4/C Spray drying Particle size Electrochemical performance Processability 

Notes

Funding information

The authors are grateful to the Natural Science Foundation of Hebei Province (Grant number E2015202356) for the financial support to this work.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Ruqian Ding
    • 1
  • Hao Liu
    • 1
  • Li Wang
    • 1
    • 2
  • Guangchuan Liang
    • 1
    • 2
    • 3
    Email author
  1. 1.Institution of Power Source and Ecomaterials ScienceHebei University of TechnologyTianjinPeople’s Republic of China
  2. 2.Key Laboratory of Special Functional Materials for Ecological Environment and Information (Hebei University of Technology)Ministry of EducationTianjinPeople’s Republic of China
  3. 3.Key Laboratory for New Type of Functional Materials in Hebei ProvinceHebei University of TechnologyTianjinPeople’s Republic of China

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