POSITIVE ELECTRODE LEAD AND ALKALINE SECONDARY BATTERY

摘要

A positive electrode lead (50) of the present invention comprises: a strip-shaped first half-lead (51) electrically connected to a sealing body (30) of a nickel-hydrogen secondary battery (1); a strip-shaped second half-lead (52) electrically connected to a positive electrode (21) in the electrode group (20) of the nickel-hydrogen secondary battery (1); a PTC thermistor (53) joined between the first half-lead (51) and the second half-lead (52); and a protective member (54) covering a portion where the PTC thermistor (53) is joined. The second half-lead (52) is provided with a portion to be bent toward the outside of the portion covered by the protective member (54). A recess groove (524) is formed on the portion covered by the protective member (54) and has a shape elongated in a direction intersecting with a bending line (B) of the portion to be bent.