Patent ID: 7897282
Filing Date: 2011-03-01
Classification: H01M

Abstract:
1. An AA alkaline battery, comprising: a positive electrode; a negative electrode; a separator placed between the positive electrode and the negative electrode; an alkaline electrolyte; and a negative electrode current collector provided in the negative electrode, wherein the negative electrode contains zinc, indium, and bismuth, the weight of zinc contained in the negative electrode is 4.0 g or more, the total weight of indium and bismuth contained in the negative electrode is 450 ppm or less with respect to the weight of zinc contained in the negative electrode, the negative electrode current collector contains copper and iron, the weight of iron contained in the negative electrode current collector is 100 ppm or less with respect to the weight of the negative electrode current collector, tin is provided on at least part of the surface of the negative electrode current collector, and the negative electrode includes a gelled alkaline electrolyte.