Cathode for air assisted battery
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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Abstract
A cathode for an air recovery alkaline battery is disclosed. The cathode contains at least about 60% by weight MnO2 and at least about 2% by weight of a hydrophobic polymer; the MnO2 consists essentially of electrochemically synthesized MnO2.
81 Citations
11 Claims
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification