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Cathode for air assisted battery

  • US 7,615,508 B2
  • Filed: 05/08/2007
  • Issued: 11/10/2009
  • Est. Priority Date: 04/26/2000
  • Status: Expired due to Fees
First Claim
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1. A method of making a cathode for a rechargeable air assisted battery, the cathode comprising (1) a catalyst comprising manganese dioxide, (2) carbon particles, and (3) a hydrophobic polymer,the method comprising(a) combining the catalyst comprising manganese dioxide, the carbon particles, and a solvent to form a mixture that does not include the hydrophobic polymer;

  • (b) combining the mixture with the hydrophobic polymer and stirring the combination at a temperature below about 10°

    C. to provide a slurry without fibrillation of the hydrophobic polymer;

    (c) warming the slurry to at least about 20°

    C. and mixing the slurry at this temperature to fibrillate the hydrophobic polymer;

    (d) loading the slurry onto a cathode current collector; and

    (e) drying the slurry by removing the solvent to provide the cathode, wherein the cathode comprises at least 70% of manganese dioxide by weight.

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