Patent ID: 8048566
Filing Date: 2011-11-01
Classification: B82Y,C01G,C01P,H01G,H01M,Y02E,Y02T

Abstract:
1. A galvanic cell comprising: (a) a zinc oxide based negative electrode; (b) a nickel hydroxide positive electrode comprising: (c) a separator disposed between the positive electrode and the negative electrode and preventing electrical contact therebetween; and (d) an alkaline electrolyte in contact with the negative electrode, the positive electrode and the separator; wherein the cobalt content, including added cobalt metal and the cobalt compound, in the nickel hydroxide positive electrode is not significantly soluble in the alkaline electrolyte at room temperature and the coating of the cobalt compound on the surface of the nickel hydroxide particles is between about 0.1% and 1% by weight of the coated nickel hydroxide particles.