Ketjien black modified ternary bismuth vanadate as new practical anode for lithium-ion batteries

Exploring new vanadium-based anode materials with excellent electrochemical properties is crucial for lithium-ion batteries. In this study, a new anode material Bi₄V₂O₁₁@C was synthesized by solid phase method with mechanical ball milling. After 230 cycles at the current density of 100 mA g⁻¹, the charging specific capacity is 530 mA h g⁻¹, which is much higher than that of the commercial graphite anode, and the initial coulombic efficiency is as high as 79 %. In addition, we investigated its reaction mechanism with lithium through cyclic voltammetry and ex-situ X-ray diffraction techniques. This result has broadened the research field of anode materials for the next generation of lithium-ion batteries.