Effect of citric acid dosage and sintered temperature on the composition, morphology and electrochemical properties of lithium vanadium oxide prepared by a sol–gel method

A lithium vanadium oxide cathode material was synthesized via sol-gel processing using citric acid as the chelating agent. Different dosage of citric acid and sintered temperature were introduced to investigate their effects on the products composition, morphology and electrochemical properties. The results showed that the V₂O₃ yield was inhibited and the crystallization of grain was accelerated with the increasing dosage of citric acid. Furthermore, V₂O₃ was oxidized to LiV₃O₈ and Li_0.3V₂O₅ with the increase of sintered temperature. (paper)