Patent ID: 8785019

Claim:
A negative electrode for a nickel-hydrogen rechargeable battery, wherein the negative electrode is a strip-shaped negative electrode forming an electrode group with a positive electrode and a separator, which is to be contained in an outer can of a nickel-hydrogen rechargeable battery, wherein the negative electrode is formed of a core body and a negative mixture layer covering both sides of the core body and containing a large number of hydrogen-storage alloy particles, the negative electrode comprising: a main section, both sides of which face the positive electrode with the separator intervening therebetween as viewed in a rolled state where the negative electrode forms the electrode group with the positive electrode and the separator, and a protruding region that is protruding from an end of the main section in a rolling direction and facing the positive electrode with the separator intervening therebetween only with one side, wherein: at least part of the hydrogen-storage alloy particles contained in the protruding region has an average diameter larger than an average diameter of the hydrogen-storage alloy particles contained in the main section, wherein a filling density of the hydrogen-storage alloy is lower in the protruding region than a filling density of the hydrogen-storage alloy in the main section.