Zinc electrode particle form
AssigneeDuracell Inc.
InventorsRichard Edward Durkot, Lifun Lin, Peter Bayard Harris
Life of this patent
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Abstract
A primary electrochemical cell with an anode comprising zinc alloy particles suspended in a fluid medium is disclosed. The zinc alloy particles include at least about 10 percent, by weight, of fines (particles of −200 mesh size) or dust (particles of −325 mesh size). The zinc particles are preferably alloyed with indium or bismuth and of acicular or flake form. The anode has a low resistivity at low zinc loadings, and the cell demonstrates good mechanical stability and overall performance.
Claims27
A negative electrode for an electrochemical cell, comprising zinc alloy particles, the particles being suspended in a fluid medium, at least about 10 percent, by weight, of the active particles being of −200 mesh size or smaller.
A negative electrode mixture for an electrochemical cell, comprising zinc alloy particles, the particles being suspended in a fluid medium with the active particles comprising less than about 55 percent of the electrode mixture, by weight;
- the particles including a sufficient proportion of particles of about −200 mesh size or smaller to provide an electrode resistivity of less than about 0.2 ohm-centimeters.
A primary electrochemical cell having
- a cathode,
- an anode comprising zinc alloy particles, the particles being suspended in a fluid medium, at least 10 percent, by weight, of the particles being of −200 mesh size or smaller, and
- a separator between the cathode and the anode.
A method of generating an electric current, comprising accumulating ions on the surface of zinc alloy particles suspended in a fluid medium containing an electrolyte, at least about 10 percent, by weight, of the particles being of −200 mesh size or smaller.
Dependencies are inferred from the claim text.