Alkaline battery cathode structures incorporating multiple carbon materials and orientations
AssigneeEnergizer Brands, LLC
InventorWeiwei Huang
Life of this patent
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Abstract
Cathode active materials for alkaline cells are disclosed. In particular, the cathode structures encompass conductive carbons introduced to the cathode so as to have a specific spatial orientation and/or a multi-carbon structure. The overall intent is to leverage the conductor(s) provided to the cathode structure to improve electronic and ionic conductance and, by extension, improve battery discharge performance.
Claims19
A method of making a cathode structure for an alkaline battery comprising:
- a first mixing step including dispersing a first conductive material in a particulate active material and forming agglomerates in which the first conductive material is entrained within the agglomerates, wherein the active material comprises manganese dioxide;
- and
- a second mixing step including adhering a second conductive material with at least a portion of a surface of the agglomerates;
- and
- wherein the second conductive material comprises particles of a larger size in comparison to particles of the first conductive material.
A method of making a cathode structure for an alkaline battery comprising:
- a first mixing step including dispersing a first conductive material in a particulate active material and forming agglomerates in which the first conductive material is entrained within the agglomerates;
- a second mixing step including adhering a second conductive material with at least a portion of a surface of the agglomerates;
- and
- orienting the first conductive material to align the first conductive material in a common direction within the cathode structure;
- and
- wherein the second conductive material comprises particles of a larger size in comparison to particles of the first conductive material.
A method of making a cathode structure for an alkaline battery comprising:
- a first mixing step including dispersing a first conductive material in a particulate active material and forming agglomerates in which the first conductive material is entrained within the agglomerates;
- a second mixing step including adhering a second conductive material with at least a portion of a surface of the agglomerates;
- and
- forming the cathode structure produced by the second mixing step into a tubular cylinder;
- and
- wherein the second conductive material comprises particles of a larger size in comparison to particles of the first conductive material.
Dependencies are inferred from the claim text.