• 专利标题:   Preparation of lithium cobalt phosphate anode material includes ball milling lithium salt, cobalt salt and phosphate with ethanol, vacuum drying, calcining, adding carbon source and ethanol, ball milling, and adding graphene sheets.
  • 专利号:   CN106374106-A
  • 发明人:   CHEN H, XU D, SHU R, CHEN R
  • 专利权人:   SHOTO GROUP CO LTD
  • 国际专利分类:   H01M010/0525, H01M004/36, H01M004/58, H01M004/62
  • 专利详细信息:   CN106374106-A 01 Feb 2017 H01M-004/58 201714 Pages: 9 Chinese
  • 申请详细信息:   CN106374106-A CN11005490 16 Nov 2016
  • 优先权号:   CN11005490

▎ 摘  要

NOVELTY - Preparation of lithium cobalt phosphate anode material includes adding ball milling tank with lithium salt, cobalt salt and phosphate, adding ethanol, ball milling, mixing, vacuum drying, and calcining; and adding carbon source and ethanol, ball milling, adding graphene sheets dissolved in ethanol or pure water solvent, sonicating, water bath heating, and calcining. USE - Method for preparation of lithium cobalt phosphate anode material (claimed). ADVANTAGE - The anode material is coated with carbon and graphene, and has improved specific surface area, conductivity and electrochemical performance which satisfies the requirement of lithium battery in high power application field. DETAILED DESCRIPTION - Preparation of lithium cobalt phosphate anode material comprises adding ball milling tank with lithium salt, cobalt salt and phosphate at molar ratio of 1:1:1, adding ethanol at weight ratio of 1 g: 1-2 mL, ball milling, mixing, vacuum drying, adding to muffle furnace, and calcining to 300-450 degrees C for 5-6 hours under inert atmosphere; adding 2-10 wt.% carbon source and ethanol at ratio of 1 g:1-2 mL, ball milling, adding 0.5-10 wt.% graphene sheets dissolved in ethanol or pure water solvent at ratio of 1 g:25-50 mL, sonicating for 0.5-10 hours, and water bath heating to 80-85 degrees C to remove the solvent; and adding to muffle furnace, and calcining to 600-800 degrees C for 6-24 hours under reducing atmosphere.