Synthesis and Performance of LiCr_xMn_(2-x)O_4 Cathode Materials for Li-ion Battery

Spinel LiCrxMn2-xO4 cathode materials for Li-ion batteries were synthesized by Pe-chini process, and their crystalline structure, apparent morphology and electrochemical performance were characterized with XRD, SEM and charge-discharge test. Results show that the samples of LiCrxMn2-xO4 possess pure spinel phase, better morphology and uniform distribution of gain sizes, with the increase of Cr content, the lattice parameters are reduced, but Cr content has a little effect on the phase structure and morphology of LiCrx-Mn2-xO4.When Cr content increases, the specific capacity of the products will decrease, the stability of spinel structure and cycle performance will be improved.