Control the synthetic method of the redox material of the coating carbon of size

Control the synthetic method of the redox material of the coating carbon of size

  • CN 101,453,020 B
  • Filed: 09/21/2001
  • Issued: 04/09/2019
  • Est. Priority Date: 09/26/2000
  • Status: Active Grant
First Claim
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1. a kind of LiFePO for preparing carbonization4Single step reaction method comprising by the chemistry of following substance under reducing atmosphereThe mixture of metering:

  • The source of Fe (III);

    The compound in the source as Li;

    WithThe compound in the source as P;

    It is reacted with the organic matter in the source as carbon,The temperature generation at up to 500 DEG C to 800 DEG C is wherein reacted, wherein restoring Fe (III) by the reducing atmosphereIt is faster than at the dynamics of Fe (II) and Fe (III) is reduced into, to permit by the dynamics of Fe (II) by the carbon in the source from the carbonPermitted to form LiFePO4And LiFePO is coated with the carbon in the source from the carbon4, to form the LiFePO of carbonization4, wherein instituteState the LiFePO of carbonization4The amount of middle carbon is equivalent to the yield of the decomposition of the organic matter, and wherein the reducing atmosphere andTemperature is selected such that Fe (II) is not reduced to metallic iron by the reducing atmosphere.

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