• 专利标题:   Composite electrode material for lithium secondary battery, comprises electrode active material, graphene and conductive material chosen from graphite, expanded graphite, carbon nanotubes, activated carbon and/or amorphous carbon.
  • 专利号:   CN102420323-A, CN102420323-B
  • 发明人:   LIU Z, TANG C, ZHOU X
  • 专利权人:   CHINESE ACAD SCI NINGBO INST MATERIAL TE, CHINESE SCI ACAD NINGBO MATERIAL TECHNOL
  • 国际专利分类:   H01M004/1397, H01M004/58, H01M004/62
  • 专利详细信息:   CN102420323-A 18 Apr 2012 H01M-004/58 201235 Pages: 26 Chinese
  • 申请详细信息:   CN102420323-A CN10051233 03 Mar 2011
  • 优先权号:   CN10051233

▎ 摘  要

NOVELTY - A composite electrode material comprises electrode active material, graphene and conductive material. The conductive material is graphite, expanded graphite, carbon nanotubes, carbon fiber, activated carbon, amorphous carbon, conductive carbon black, carbon material generated by the pyrolysis of organic materials, silver, copper, platinum or gold as transition metals, semimetal, conjugated conducting polymer, ion-conductive material and/or metal complex (I). USE - Composite electrode material is used for lithium secondary battery. ADVANTAGE - The composite electrode material has electrical conductivity of 0.87 S/cm and ion diffusion coefficient of 8.4x 10-8 cm2/second. DETAILED DESCRIPTION - A composite electrode material comprises electrode active material, graphene and conductive material. The conductive material is graphite, expanded graphite, carbon nanotubes, carbon fiber, activated carbon, amorphous carbon, conductive carbon black, carbon material generated by the pyrolysis of organic materials, silver, copper, platinum or gold as transition metals, semimetal, conjugated conducting polymer, ion-conductive material and/or metal complex of formula MmXn (I), where X is oxygen, sulfur or nitrogen, M is lithium, sodium, potassium, magnesium, calcium, aluminum, titanium, scandium, germanium, vanadium, chromium, zirconium, cobalt, nickel, zinc, copper, manganese, hafnium, niobium, tantalum, molybdenum, tungsten, ruthenium, silver, tin, silicon, lead, indium, yttrium and/or phosphorus and m and n are less than 0 to more than 10. An INDEPENDENT CLAIM is included for production of composite electrode material, which involves performing thermal treatment process of electrode active material, graphene and conductive material at 200-900 degrees C under non-oxidizing atmosphere.