LiNi_1/3Mn_1/3Co_1/3O₂ Synthesized by Sol-Gel Method: Structure and Electrochemical Properties

We report the structural and electrochemical properties of LiNi_1/3Mn_1/3Co_1/3O₂ (LNMC) synthesized by sol-gel method via citrate xerogel. Characterizations showed that powders crystallized in the well-defined aENaFeO₂ structure with cationic distribution close to the nominal formula. The cationic mixing, i.e. Ni ions located in the Li sublattice was estimated 3.2% from both XRD and magnetic measurements. The effect of the interslab mixing on electrochemical performance is discussed and compared with other LiNi_yMn_yCo_1-2yO₂ systems. Initial discharge capacity of 176 mAh g⁻¹ was delivered at C/15-rate in the cut-off voltage of 2.5–4.5 V. More than 87% of its initial capacity was retained after 35 cycles at C/15-rate.