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

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.