Abstract
An extrapolation of the world energy consumption from 1990 to 2010 indicates a complete exhaustion of the world reserves of oil, natural gas, uranium, and coal by 2043, 2047, 2051, and 2055, respectively. For the survival of all people in the whole world, intermittent and fluctuating electricity generated from renewable energy should be supplied in the form of usable fuel. We have been working on research and development of global CO2 recycling for the use of renewable energy produced via electrolytic hydrogen generation in the form of methane. We created energy-saving cathodes for H2 production, anodes for O2 evolution without chlorine formation in seawater electrolysis, and catalysts for methanation of CO2 by the reaction with H2, and built pilot plants on an industrial scale. The development of new anode and cathode for alkali water electrolysis, the improvement of the anode for seawater electrolysis and the catalysts for CO2 methanation, as well as industrial applications are in progress.
Highlights
The future of energy Over the past two decades, we have been working on research and development of a global CO2 recycling system
These cathodes with mechanistically highest activity made of Ni-based alloys or Co-based alloys [8] can be used for direct seawater electrolysis and for high-temperature alkali water electrolysis
The basic technologies for realizing global CO2 recycling have already been in our hands
Summary
The future of energy Over the past two decades, we have been working on research and development of a global CO2 recycling system. Global carbon dioxide recycling As early as the 1970s, we had been dreaming to supply hydrogen to all people in the whole world, generating hydrogen by seawater electrolysis using the renewable energy origin electricity. We could get the Ni-Fe-C electrode with the mechanistically fastest hydrogen formation due to the high density of the active surface sites, and due to the fast charge transfer from the cathode to proton, we found that the significant charge transfer from nickel to iron by the addition of iron and carbon to nickel is responsible for the remarkable acceleration of proton discharge to form hydrogen atoms adsorbed on the cathode surface These cathodes with mechanistically highest activity made of Ni-based alloys or Co-based alloys [8] can be used for direct seawater electrolysis and for high-temperature alkali water electrolysis.
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