Patent ID: 7172835
Filing Date: 2007-02-06
Classification: H01M,Y02E

Abstract:
1. An alkaline rechargeable battery for storing electrical energy, having a closed housing, a positive electrode, a negative electrode and a separator which is arranged between the electrodes, with the positive electrode having as a substrate material a nickel foam strip, a nickel strip or nickel-plated perforated or unperforated steel strip and a pasty active material, which is composed mainly of nickel hydroxide, and contains particles of cobalt hydroxide or cobalt monoxide as well as a binding agent, wherein the active material of the positive electrode contains 9 to 20% by weight of a graphite mixture as the conductive agent, more than 70% of which is composed of fibrous graphite with a fiber length of 10 to 35 μm and with a fiber diameter of 3 to 8 μm.