Mn-Mo-Sn Oxide Anodes for Oxygen Evolution in Seawater Electrolysis for Hydrogen Production

摘要

For prevention of global warming and for prevention of complete exhaustion of fossil fuels and uranium, renewable energy origin fuels should be supplied to meet the demand of the whole world. We are proposing global carbon dioxide recycling for the use of renewable energy. Intermittent electricity generated by solar cell in deserts will be converted to hydrogen by seawater electrolysis at nearby desert coasts, and hydrogen with no infrastructures of transportation and combustion will be converted to methane by the reaction with carbon dioxide. Methane is the same as natural gas for which there exist efficient infrastructures of transportation and combustion. Key materials necessary for this process are the anode and cathode for seawater electrolysis and the catalyst for conversion of carbon dioxide into methane. We have been creating these key materials.rnFor production of enormous amount of fuel, enormous amount of chlorine evolution, which generally occurs on the anode in seawater electrolysis, is not allowed. Thus in spite of seawater electrolysis, the reaction on the anode should not be chlorine evolution but be oxygen evolution.