US 5,348,816 A · Alkaline battery

Abstract

A method for producing a gel form negative electrode of an alkaline battery while avoiding use of mercury enables uniform dispersion of zinc or zinc alloy powder and an effective metal which can be one or more of an oxide or hydroxide of indium, lead, gallium, bismuth, by stirring for a substantially reduced period. The method employs dry mixing of the zinc or zinc alloy powder and the effective metal in advance of mixing with a gel form alkaline electrolyte. Also, in order to obtain satisfactorily high vibration strength and impact resistance, fiber material can be added to the gel form negative electrode. The fiber material may be selected among rayon, vinylon, acryl, vinyon, polyamide, polypropylene, polyethylene, mercerized pulp, linter pulp.

Claims9

Dependent claims

A method for producing a gel form negative electrode for an alkaline battery, said method comprising the steps of:

preparing by dry mixing a dry mixture of one or more of an oxide or hydroxide of indium, lead, gallium and bismuth and zinc or zinc alloy powder;
putting said dry mixture into a gel form alkaline electrolyte;
and
mixing and dispersing said dry mixture in the gel form alkaline electrolyte.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

07/896,969Filed 11 Jun 1992

Priority

JP 3-16517811 Jun 1991

Granted

20 Sep 1994

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

H01M 6/06
Cells with aqueous electrolyte: dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
H01M 4/12
Processes of manufacture: of consumable metal or alloy electrodes
H01M 4/62
Electrodes composed of, or comprising, active material: selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H01M 4/02
Electrodes: electrodes composed of, or comprising, active material

Alkaline battery

Life of this patent

Alkaline battery

Life of this patent

Abstract

Claims9