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After preparing the precursor by a liquid precipitation method,a series of tin-zinc composite oxides with different components and structures were synthesized as the anode materials for lithium ion batteries when the precursor was pyrolyzed at different temperatures.The products were characterized by X-ray diffraction (XRD),transmission electron microscopy (TEM),and electrochemical measurements.The reversible capacity of amorphous ZnSnO3 is 844 mA.h/g in the first cycle and the charge capacity is 695 mA-h/g in the tenth cycle.The reversible capacity of ZnO.SnO2 is 845 mA.h/g in the first cycle and the charge capacity is 508 mA.h/g in the tenth cycle.The reversible capacity of SnO2-Zn2SnO4 is 758 mA.h/g in the first cycle and the charge capacity is 455 mA.h/g in the tenth cycle.Results show that amorphous ZnSnO3 exhibits the best electrochemical property among all of the tin-zinc composite oxides.With the formation of crystallites in the samples,the electrochemical property of the tin-zinc composite oxides decreases.