Lithium ion battery phosphate-based composite cathode material and preparation method thereof

Lithium ion battery phosphate-based composite cathode material and preparation method thereof

  • CN 105,304,881 A
  • Filed: 12/01/2015
  • Published: 02/03/2016
  • Est. Priority Date: 12/01/2015
  • Status: Active Application
First Claim
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1. the preparation method of a lithium ion battery phosphate base composite positive pole, it is characterized in that, comprise the steps:

  • phosphorus source and the mixing of surfactant ball milling, obtain opalescent mixture, add paraffin and continue ball milling mixing, add transition metal ions presoma and lithium source to continue ball milling and obtain uniform mixture, the mixture of gained heats up calcining, naturally cools to obtain phosphate base composite positive pole;

    Described transition metal ions presoma comprises in following (1) (2) (3) two or three;

    (1) mixture of one or more in the oxide of vanadium, oxalic acid hydrate alum, ammonium metavanadate, lithium vanadate;

    (2) mixture of one or more in ferrous sulfate, ferrous oxalate, iron oxide, ironic citrate, ferric phosphate, ferric nitrate;

    (3) mixture of one or more in manganese sulfate, manganese oxalate, acetate hydrate manganese, manganese oxide, manganese citrate, manganese phosphate, manganese nitrate.

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