Abstract: Spinel LiCr_xMn_2-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 LiCr_xMn_2-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 LiCr_xMn_2-xO₄ . When Cr content increases, the specific capacity of the products will decrease, the stability of spinel structure and cycle performance will be improved.

Key words: spinel LiCr_xMn_2-xO₄, pechini process, cathode materials, Li-ion battery