• 专利标题:   Preparing graphene battery anode material used e.g. in lead-acid battery, comprises stirring three-dimensional graphene, barium sulfate, organic additive and lead powder in ethanol solution, adding binder, spray drying, adding fiber dispersion, and coating lead paste on lead-acid battery grid.
  • 专利号:   CN115911379-A
  • 发明人:   LOU Q, ZHANG X, GAO J, CHEN T, HUANG B
  • 专利权人:   HUAYU NEW ENERGY TECHNOLOGY CO LTD
  • 国际专利分类:   H01M004/14, H01M004/20, H01M004/62
  • 专利详细信息:   CN115911379-A 04 Apr 2023 H01M-004/62 202337 Chinese
  • 申请详细信息:   CN115911379-A CN11468497 22 Nov 2022
  • 优先权号:   CN11468497

▎ 摘  要

NOVELTY - Preparing graphene battery anode material, comprises: (i) adding auxiliary agent and alkyl siloxane into polytetrafluoroethylene emulsion, and stirring to obtain binder; (ii) adding three-dimensional graphene, barium sulfate, organic additive and lead powder into ethanol aqueous solution, stirring, adding binder, continuously stirring to obtain slurry, and spray drying to obtain powder; (iii) dispersing fiber in deionized water to obtain dispersion, adding the dispersion and powder into a paste machine, stirring and adding 45-51 wt.% sulfuric acid solution, and continuously stirring to obtain the lead paste; and (iv) coating the lead paste on a lead acid battery grid at a coating thickness of 1-3 mm, and then oven drying at 50-70℃ for 24-45 hours to obtain the graphene battery anode material. USE - The method is useful for preparing graphene battery anode material used in lead-acid battery and lithium battery. ADVANTAGE - The method uses three-dimensional graphene as conductive agent an is combined with agglomerant to ensure tight combination and uniform distribution of active substance and carbon powder, imparts excellent mechanical and electrochemical performance of the anode material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included fora graphene battery anode material.