Open-pore LiFePO4/C microspheres with high volumetric energy density for lithium ion batteries--颗粒学报PARTICUOLOGY

Wen, L., Hu, X., Luo, H., Li, F., & Cheng, H. (2015). Open-pore LiFePO4/C microspheres with high volumetric energy density for lithium ion batteries. Particuology, 22, 24-29. https://doi.org/10.1016/j.partic.2014.11.002

Open-pore LiFePO₄/C microspheres with high volumetric energy density for lithium ion batteries

Lei Wen ^a, Xiaodong Hu ^b, Hongze Luo ^c, Feng Li ^a *, Huiming Cheng ^a

a Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
b Shenzhen Kingrunning Energy Materials Co., Ltd., Shenzhen 518000, China
c Council for Scientific and Industrial Research, Pretoria 0001, South Africa

10.1016/j.partic.2014.11.002

Volume 22, October 2015, Pages 24-29

Received 1 September 2014, Revised 15 November 2014, Accepted 24 November 2014, Available online 5 January 2015, Version of Record 4 August 2015.

E-mail: fli@imr.ac.cn

Highlights

• LiFePO₄/C microspheres were prepared using a mixture of glucose and citric acid as carbon source.

• The prepared microspheres had rough surface and open pore structure.

• The LiFePO₄/C microspheres rendered higher volumetric energy density and rate performance to LIBs.

Abstract

LiFePO₄/C microspheres with different surface morphologies and porosities were prepared from different carbon sources. The effects of the surface morphology and pore structure of the microspheres on their electrochemical properties and electrode density were investigated. The electrochemical performance and electrode density depended on the morphology and pore structure of the LiFePO₄/C microspheres. Open-pore LiFePO₄/C microspheres with rough surfaces exhibited good adhesion with current collectors and a high electrode density (2.6 g/cm³). They also exhibited high performance in a half cell and full battery with a high volumetric energy density.

Graphical abstract

Keywords

Lithium iron phosphate; Lithium ion batteries; Volumetric energy density; Open-pore structure

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