▎ 摘　　要

NOVELTY - A lithium manganese borate/graphene based lithium-ion battery cathode material preparing method involves dissolving lithium source, manganese source, a boron source and a reducing agent in deionized water. Graphene is added to the resulting solution and placed in water bath to form a mixed solution. pH value of the resulting solution is adjusted to 6-9. The resultant solution is granulated and dried to obtain a lithium manganese borate/graphene precursor. The precursor is put in a non-oxidizing atmosphere and sintered, and cooled to room temperature to obtain the finished product. USE - Method for preparing a lithium manganese borate/graphene based lithium-ion battery cathode material. ADVANTAGE - The method enables preparing the lithium-ion battery cathode material with good electrochemical performance. DETAILED DESCRIPTION - A lithium manganese borate/graphene based lithium-ion battery cathode material preparing method involves dissolving lithium source, manganese source, a boron source and a reducing agent in a molar ratio of 1:1:1:1-5, in deionized water and controlling the concentration of manganese metal ions to 0.01-0.2 mole/l. Graphene is added to the resulting solution and placed in water bath at 60-100 degrees C under stirring for 10-45 hours to form a mixed solution, where the concentration of a mixture of graphene is 0.1-1.4 g/l. pH value of the resulting solution is adjusted to 6-9. The resultant solution is granulated and dried to obtain a lithium manganese borate/graphene precursor. The precursor is put in a non-oxidizing atmosphere at 450-800 degrees C and sintered for 6-22 hours, and cooled to room temperature to obtain the finished product.