The effect of 0.025 Al-doped in Li₄Ti₅O₁₂ material on the performance of half cell lithium ion battery

The effect of 0.025 Al-doped Li₄Ti₅O₁₂ as anode material for Lithium Ion battery had been studied. The pure and 0.025 Al-doped Li₄Ti₅O₁₂ were synthesized through solid state process in air atmosphere. Physical characteristics of all samples were observed by XRD, FTIR, and PSA. The XRD analysis revealed that the obtained particle was highly crystalline and had a face-centered cubic spinel structure. The XRD pattern also showed that the 0.025 Al-doped on the Li₄Ti₅O₁₂ did not change crystal structure of Li₄Ti₅O₁₂. FTIR analysis confirmed that the spinel structure in fingerprint region was unchanged when the structure was doped by 0.025 Al. However the doping of 0.025 Al increased particle size significantly. The electrochemical performance was studied by using cyclic voltammetry (CV) and charge-discharge (CD) curves. Electrochemical analysis showed that pure Li₄Ti₅O₁₂ has higher capacity than 0.025 Al-doped Li₄Ti₅O₁₂ had. But 0.025 Al-doped Li₄Ti₅O₁₂ possesses a better cycling stability than pure Li₄Ti₅O₁₂.