| abstract |
The invention relates to a method for preparing a molybdenum trioxide-coated lithium-rich manganese-based positive electrode material. Ammonium molybdate is dissolved in deionized water, and lithium-rich manganese-based positive electrode precursor powder is dissolved in an ammonium molybdate solution. Ammonia water, adjust the pH to 8.0-8.5, at 75℃-85℃, stir and heat until the water evaporates. Then, the above mixture was dried at 100°C-110°C for 12h-14h, calcined at 420°C-470°C for 5-7h, and then continued to be calcined at 780°C-850°C for 20h-24h to obtain different mass fractions of three Lithium-rich manganese-based cathode material is coated with molybdenum oxide. The molybdenum trioxide-coated lithium-rich manganese-based positive electrode material prepared by the above method can reduce energy loss, increase the reaction area, and improve the first Coulomb efficiency compared with the uncoated lithium-rich manganese-based positive electrode material. |