Partic. vol. 22 pp. 24-29 (October 2015)
doi: 10.1016/j.partic.2014.11.002

Invited paper

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

fli@imr.ac.cn

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