• 专利标题:   Method for preparing graphene-based lithium iron phosphate/carbon composite material used in power battery, involves preparing phosphate/oxide precursor by dispersing ferric salt- and phosphate solution followed by drying obtained emulsion.
  • 专利号:   CN102683697-A, WO2013170720-A1, DE112013002485-T5, CN102683697-B, KR2015027753-A, US2015102267-A1, JP2015525182-W, KR1681461-B1, US9672951-B2, JP6172818-B2
  • 发明人:   CAO Y, DU K, HU G, PENG Z, WU K, DU KE
  • 专利权人:   UNIV CENT SOUTH, GUOGUANG ELECTRIC CO LTD, GUOGUANG ELECTRIC CO LTD
  • 国际专利分类:   H01M004/58, C01B031/00, H01M004/04, H01M004/136, H01M004/1397, H01M004/36, H01M004/583, H01M004/62, C01B025/45, C01B031/02, C01B025/37, C01B031/04, H01B001/06, C01B032/198
  • 专利详细信息:   CN102683697-A 19 Sep 2012 H01M-004/58 201321 Pages: 8 Chinese
  • 申请详细信息:   CN102683697-A CN10148114 14 May 2012
  • 优先权号:   CN10148114, KR735063

▎ 摘  要

NOVELTY - A graphene-based lithium iron phosphate/carbon composite material preparing method involves preparing a ferric salt solution in which graphene oxide is dispersed at a ratio of 0.1-0.3: 1. Iron phosphate/graphene oxide precursor is prepared by dispersing the ferric salt solution and phosphate solution to obtain reaction mixed solution at a ratio of iron:phosphate of 1:1-1.2 followed by adjusting the reaction pH to 2-4, controlling the temperature to 600-700 degrees C to obtain emulsion. The emulsion is filtered, washed, dried to obtain the composite material. USE - Method for preparing graphene-based lithium iron phosphate/carbon composite material that is utilized in a power battery. ADVANTAGE - The method enables preparing the composite material with high specific capacity, better cyclic performance and multiplying performance.