Method for manufacturing cobalt protoxide used as secondary battery catalyst

Method for manufacturing cobalt protoxide used as secondary battery catalyst

  • CN 101,244,845 A
  • Filed: 03/07/2008
  • Published: 08/20/2008
  • Est. Priority Date: 03/07/2008
  • Status: Active Application
First Claim
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1. , a kind of preparation method who is used as the cobaltous oxide of secondary battery catalyst is characterized in that may further comprise the steps successively:

  • (A) raw material;

    a kind of lithium cobalt paper is provided;

    (B) alkali is molten;

    lithium cobalt paper is dropped in the strong base solution, and input amount;

    lithium cobalt paper and highly basic part by weight are 1;

    0.5~

    5, react that aluminium content is less than 5% to the lithium cobalt paper, and rinsing goes aluminium foil to make the cobalt slag;

    (C) acidolysis;

    add sulfuric acid in the cobalt slag, add-on;

    cobalt slag and sulfuric acid part by weight are 1;

    0.5~

    6, and acidolysis becomes cobalt sulfate solution, add neutralizing agent, control pH value to 1~

    6;

    (D) purify;

    add sodium-chlor in the cobalt sulfate solution earlier, impurity is removed in press filtration, adds Sodium Fluoride after the heated and stirred, and impurity is removed in press filtration again;

    (E) extraction;

    the cobalt sulfate solution multi-stage solvent extraction after will purifying makes cobalt nitrate solution after the purification;

    (F) precipitation;

    the cobalt nitrate solution homogeneous heating is stirred, drop into saleratus solution, input amount;

    Xiao Suangu and sodium bicarbonate part by weight are 1;

    0.4~

    4, get cobaltous carbonate behind the reaction precipitation;

    (G) roasting;

    cobaltous carbonate is after dehydration, oven dry, and roasting under 350~

    700 ℃

    of temperature, in inertia or the little reducing atmosphere makes cobaltous oxide.

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