| 摘要 |
<p> The purpose of the present invention is to provide a water electrolysis device in which facility costs can be reduced further than in the past, and an energy storage and supply system in which the water electrolysis device is used. The water electrolysis device for electrolyzing water and generating hydrogen and oxygen according to the present invention is characterized in being provided with: an aqueous electrolyte solution containing an intermediate product which repeatedly undergoes oxidation-reduction reactions; an electrolytic electrode for electrolyzing water; an intermediate electrode for performing the oxidation-reduction reactions of the intermediate product; and an electrolytic tank for housing the aqueous electrolyte solution, the electrolytic electrode, and the intermediate electrode; the intermediate product having an oxidation reduction potential higher than the hydrogen generation potentials of the intermediate electrode and the intermediate product and lower than the hydrogen generation potential of the electrolytic electrode.</p> |
