Abstract
Lithium zinc titanate (Li2ZnTi3O8) anode materials have been firstly synthesized via a molten-salt method using 0.38LiOH·H2O–0.62LiNO3 as eutectic molten salts. The effects of sintering temperature and sintering time on the structures and physicochemical properties of the Li2ZnTi3O8 materials are also studied in detail. It is found that Li2ZnTi3O8 obtained by sintering at 700°C for 3h exhibits a typical cubic spinel structure with P4332 space group. Nano-sized particles are presented and the particles are homogeneous for the Li2ZnTi3O8 prepared by sintering at 700°C for 3h. Electrochemical tests demonstrate that the sample possesses large capacities. The largest capacities of 167.8 and 142.4 mAh g−1 are delivered at 2 and 3Ag−1, respectively. 137.8 and 113.3mAhg−1 are kept for the sample at the 100th cycle at the two current densities, respectively. The large discharge specific capacities may be attributed to the good crystallinity, small particle size and low charge-transfer resistance of Li2ZnTi3O8.
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