Electrode composite material preparation method, positive electrode and battery having positive electrode

Electrode composite material preparation method, positive electrode and battery having positive electrode

  • CN 103,794,764 A
  • Filed: 10/26/2012
  • Published: 05/14/2014
  • Est. Priority Date: 10/26/2012
  • Status: Active Application
First Claim
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1. a preparation method for electrode composite material, is characterized in that:

  • described preparation method comprises the steps;

    Raw material mixes, dry, obtains mixture, and described raw material at least comprises elemental sulfur and polyacrylonitrile, and the percentage by weight of described elemental sulfur is not less than 50%;

    Described mixture carries out heat treated for the first time under the first protective atmosphere, obtains compound, and in the described atmosphere of heat treated for the first time, elemental sulfur is in saturation condition;

    Described compound carries out heat treated for the second time under the second protective atmosphere, cooling, obtains electrode composite material, and in the described atmosphere of heat treated for the second time, elemental sulfur is in undersaturated condition.

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