Zinc battery

A zinc battery comprising:

• a closed-end cylindrical can having an opening at an upper end thereof and serving also as a negative electrode terminal;
• an electrode group that, together with an alkaline electrolyte, is housed in the can;
• and
• a sealing member that includes a positive electrode terminal and a sealing plate electrically connected to the positive electrode terminal, the sealing plate having a portion that is fitted into the opening to seal the opening,
• wherein the electrode group is formed by winding a positive electrode and a negative electrode stacked together with a separator interposed therebetween into a spiral shape and has a columnar overall shape,
• wherein the negative electrode includes a negative electrode substrate and a negative electrode mixture held in the negative electrode substrate,
• wherein the negative electrode mixture contains at least one of zinc, a zinc alloy, and a zinc-containing compound,
• wherein a protruding negative electrode edge portion that is a partially protruding portion of the negative electrode is located at a lower end surface portion of the electrode group that is located on a bottom side of the can, and
• wherein the protruding negative electrode edge portion is in direct contact with an inner surface of a bottom of the can.