Synthesis and electrochemical properties of CeVO4/Fe3O4 as a novel anode material for lithium-ion batteries

The CeVO 4 /Fe 3 O 4 compound is successfully obtained by combining hydrothermal treatment and water bath process. The final product has been characterized by X-ray diffraction, scanning electron microscopy, and X-ray photoelectron spectroscopy techniques. The electrochemical properties of the expected compound were tested by a battery test system. The obtained CeVO 4 /Fe 3 O 4 composite shows higher specific capacity and better cyclability than pure CeVO 4 prepared under the same conditions. The initial discharge specific capacities of CeVO 4 and CeVO 4 /Fe 3 O 4 are 671.7 and 964.0 mAh·g −1 , respectively. After 100 cycles, CeVO 4 and CeVO 4 /Fe 3 O 4 still maintained their discharge capacities at 416.4 and 875.9 mAh·g −1 , representing capacity retention rates of 62.0% and 91.0%, respectively. The possible reaction mechanism for the CeVO 4 /Fe 3 O 4 composite is also discussed. The CeVO 4 /Fe 3 O 4 composite may be a prospective anode material for the lithium-ion battery.