Method for preparing carbon-coated sodium ferric phosphate material

Method for preparing carbon-coated sodium ferric phosphate material

  • CN 105,280,899 A
  • Filed: 09/22/2015
  • Published: 01/27/2016
  • Est. Priority Date: 09/22/2015
  • Status: Active Application
First Claim
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1. prepare a method for the coated phosphoric acid ferrisodium material of carbon, it is characterized in that, concrete steps are as follows:

  • 1) by Fe (NO 3) 39H 20, NaH 2pO 42H 2o is according to chemical formula NaFePO 4, the ratio being 1;

    1;

    1 in the mol ratio of Na;

    Fe;

    P puts into beaker;

    2) in above-mentioned beaker, glucose is added, NaFePO 4be 3 ~ 4;

    1 with the mass ratio of glucose;

    Wherein, NaFePO 4quality be in theory generate quality come, its quality calculates according to following chemical equation;

    Fe(NO 3) 3·

    9H 20+NaH 2PO 4·

    2H 2O+1/6C 6H 12O 6·

    H 2O→

    NaFePO 4+3NO+CO 2+79/6H 2O;

    3) in above-mentioned beaker, citric acid is added, NaFePO 4be 1 ~ 2;

    1 with the mass ratio of citric acid;

    Wherein, NaFePO 4quality be in theory generate quality come, its quality calculates according to following chemical equation;

    Fe(NO 3) 3·

    9H 20+NaH 2PO 4·

    2H 2O+1/6C 6H 12O 6·

    H 2O→

    NaFePO 4+3NO+CO 2+79/6H 2O;

    4) in above-mentioned beaker, add ethylene glycol to mix;

    5) above-mentioned beaker is put into the water-bath of 60 ~ 90 DEG C, and stir;

    6) take out beaker after forming gel, put into baking oven and dry;

    7), after oven dry terminates, material is taken out and grinds;

    8) calcined in an inert atmosphere by the material after grinding, the temperature of calcining is 550 ~ 650 DEG C, and the time of calcining is 6 ~ 10h, obtains the phosphoric acid ferrisodium material that carbon is coated.

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