Cathode electrode, composite of cathode electrode and substrate, electrolytic reduction device provided with cathode electrode, and method for producing composite of cathode electrode and substrate

Abstract

The invention provides a cathode electrode and a composite of the cathode electrode and a base material, which can stably maintain high efficiency for a long period of time in a catalytic reaction for generating olefin hydrocarbons such as ethylene and alcohols such as ethanol through a reduction reaction of carbon dioxide. The cathode electrode is used for electrically reducing carbon dioxide and contains copper and at least one additive element selected from the group consisting of aluminum, boron, gallium, zinc, titanium and silicon, the copper including zero-valent copper, and monovalent copper and / or divalent copper.

Images