Electrolysis of CO2 and H2O

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Electrolysis of CO2 and H2O ( electrolysis-co2-and-h2o )

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Chapter 3. Sustainable Hydrocarbon Fuels by Recycling CO2 with Renewable/Nuclear Energy 83 Demonstration of durable operation of solid oxide electrolysis cell stacks at high current densities (≥1 A/cm2). Since the existing cells can be efficiently operated at such high current densities at the thermoneutral voltage, operating at this point would be a straightforward way to improve the economics, if performance at this operating point can be maintained over long-term operation. Demonstration of intermittent cell operation, which may require development of specialized power management and heat management schemes. Circumstances for initial implementation were discussed. Sites with excess inexpensive constant-supply renewable power, such as those available in Iceland, are ideal. However, since these circumstances are rare, large-scale implementation depends on using inexpensive, intermittent renewable energy (e.g. solar arrays built in remote, sunny locations such as the desert, or excess wind power supply) and/or constant-supply nuclear power for synthetic fuel production. With feasible technology development and mass production of the process components, CO2-recycled hydrocarbon fuels can be produced at the scale needed to replace transportation fuels at a price competitive with more conventional fossil-derived hydrocarbons, especially if oil and CO2 sequestration costs are high. The potentially greater sustainability of CO2-recycled fuels over fossil or biomass derived fuels, as well as independence from the geographic and supply related issues of conventional fuels, could also give CO2-recycled fuels a market advantage. 3.5. References 1. FactSage 5.5 software. 2. Lackner KS, Capture of carbon dioxide from ambient air. The European Physical Journal - Special Topics, (2009). 176(1): p. 93-106. 3. Kheshgi HS, Prince RC, and Marland G, The potential of biomass fuels in the context of global climate change: Focus on transportation fuels. Annual Review of Energy and the Environment, (2000). 25: p. 199-244. 4. Steinberg M, Electrolytic synthesis of methanol from CO2. (1976). USPTO 3,959,094. 5. Steinberg M, Production of Synthetic Methanol Fom Air and Water Using Controlled Thermonuclear Reactor Power—I. Technology and Energy Requirement. Energy Conversion, (1977). 17: p. 97-112. 6. Dang VD and Steinberg M, Production of synthetic methanol from air and water using controlled thermonuclear reactor power--II. Capital investment and production costs. Energy Conversion, (1977). 17(4): p. 133-140. 7. Steinberg M, Synthetic Carbonaceous Fuels and Feedstocks from Oxides of Carbon and Nuclear-Power. Fuel, (1978). 57(8): p. 460-468. 8. Steinberg M, Synthetic carbonaceous fuels and feedstocks. (1980). USPTO 4,197,421. 9. Lewis JG and Martin AJ, Method for obtaining carbon dioxide from the atmosphere and for production of fuels. (1979). USPTO 4,140,642. 10. Corbett MJ and Salina SC, Production of synthetic hydrocarbons from air, water and low cost electrical power. (1981). USPTO 4,282,187. 11. Corbett MJ, Synfuel production ship. (1986). USPTO 4,568,522. 12. Martin FJ and Kubic WL, Green FreedomTM: A Concept for Producing Carbon-Neutral Synthetic Fuels and Chemicals. (2007), Los Alamos National Laboratory. LA-UR-07-7897.

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