The reaction process of Li_4Ti_5O_(12)prepared from different lithium and titanium sources was investigated, and the crystal structures of Li_4Ti_5O_(12)synthesized by different methods were analyzed.The results show that Li_4Ti_5O_(12)had a single phase with face-centred lattice spinel-framework structure,prepared from Li_2CO_3 and micrometer TiO_2(anatase).The proper calcination conditions was 600℃for 8h,followed by 800℃for 2h.Grinding must be done between the two calcinations.But this needed to be furthe...