METAL ELECTRODE AND METAL-AIR BATTERY

摘要

The present invention provides a metal electrode for metal-air batteries, which has high utilization efficiency of an electrode active material. A metal electrode according to the present invention is provided with a collector and an electrode active material layer that covers a part of the collector. This metal electrode is characterized in that: the collector has a first hole that penetrates the collector, a first recessed portion that is formed in the collector surface or a first projected portion that is formed in the collector surface; the electrode active material layer has a second hole that penetrates the electrode active material layer or the electrode active material layer and the collector, a second recessed portion that is formed in the electrode active material layer surface or a second projected portion that is formed in the electrode active material layer surface; the second hole or the second recessed portion are arranged so as to overlap the first hole or the first recessed portion; and the second projected portion is arranged so as to overlap the first projected portion.