• 专利标题:   Manganese silicate lithium/graphene composite lithium ion positive material preparation method, involves calcinating pieces of precursor in nitrogen atmosphere at specified temperature to obtain target product.
  • 专利号:   CN102340005-A
  • 发明人:   PAN Q, WU X, XU J, YUAN A, ZHAO H
  • 专利权人:   UNIV SHANGHAI
  • 国际专利分类:   H01M004/58
  • 专利详细信息:   CN102340005-A 01 Feb 2012 H01M-004/58 201219 Pages: 7 Chinese
  • 申请详细信息:   CN102340005-A CN10301112 09 Oct 2011
  • 优先权号:   CN10301112

▎ 摘  要

NOVELTY - The method involves drying a baby pink gel in a fan drying box at 40 degrees centigrade to obtain dry gel. The dry gel is grinded to powder in an agate mortar. A reaction precursor is obtained by evaporating acetone utilized as a dispersing agent. The precursor is pressed into pieces by pressure of 4 MPa. The pieces are calcinated in nitrogen atmosphere at temperature of 450 degrees centigrade for 15 hours to obtain a target product. 100 mg of the obtained product and 50 mg of graphene are dispersed in 50 ml of water. USE - Method for preparing a manganese silicate lithium/graphene composite lithium ion positive material. ADVANTAGE - The method allows preparing a manganese silicate lithium/graphene composite lithium ion positive material in a simple and cost-effective manner. The prepared material has better dispersibility and improved conductivity. DETAILED DESCRIPTION - The baby pink gel is obtained by transferring evenly mixed solution to 100 ml polytetrafluoroethylene tank and reacting the solution in a thermostat at 80 degrees centigrade for 15 hours. The evenly mixed solution is obtained by mixing lithium salt, manganese salt and tetraethyl orthosilicate in absolute ethyl alcohol according to a specified proportion, adding specified amount of catalyst to the mixture and magnetically mixing the catalyst. DESCRIPTION OF DRAWING(S) - The drawing shows a graph illustrating electrochemical properties of manganese silicate lithium/graphene composite.'(Drawing includes non-English language text)'