Hydrogen production by high temperature electrolysis coupled with an EPR, SFR or HTR: techno-economic study and coupling possibilities

Rivera-Tinoco, Rodrigo; Mansilla, Christine; Bouallou, Chakib; Werkoff, F.

doi:10.1504/ijnhpa.2008.019453

Cited by 6 publications

(1 citation statement)

References 13 publications

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“…(continued from previous page) and central station (e.g., 150,000 kg H 2 / day) sizes, 43 syngas production for industrial uses, 47 and oxygen generation/recovery for space applications. 48,49 Integration of SOEC systems with nuclear 50 and renewable energy resources such as solar energy 51 has been envisioned. Figure 10 shows a concept of a SOEC-based hydrogen production central system coupled with high-temperature gascooled nuclear reactors.…”

Section: Minh and Mogensenmentioning

confidence: 99%

Reversible Solid Oxide Fuel Cell Technology for Green Fuel and Power Production

Minh

Mogensen

2013

Interface magazine

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A reversible solid oxide fuel cell (RSOFC) is a device that can operate efficiently in both fuel cell and electrolysis operating modes. Thus, in the fuel cell mode, an RSOFC functions as an SOFC, generating electricity by electrochemical combination of a fuel (hydrogen, hydrocarbons, alcohols, etc.) with air (oxygen in the air). In the electrolysis mode, an RSOFC functions as an electrolyzer (in this case, referred to as a solid oxide electrolysis cell or SOEC), producing hydrogen (from water) or chemicals such as syngas (from mixtures of water and carbon dioxide) when coupled with an energy source (fossil, nuclear, renewable). Figure 1 illustrates the operating principles of the RSOFC. The RSOFC has the following attractive features (demonstrated or potential): compatibility (environmentally compatible with reduced CO 2 emissions in power generation mode), flexibility (fuel flexible and suitable for integration with any type of energy sources), capability (useful for different functions), adaptability (suitable for a variety of applications and adaptable to local energy needs), and affordability (competitive in costs). 1 The RSOFC thus possesses all the desired characteristics to serve as a technology base for green, flexible, and efficient energy systems in the future (Fig. 2).Sustainable energy systems based on the RSOFC for the future is feasible. An example of such a system is shown schematically in Fig. 3. In this system, the RSOFC, operating in the electrolysis mode, uses a renewable energy supply (e.g., solar, wind, hydro) to produce hydrogen (from H 2 O) or syngas (H 2 +CO) (from mixtures of H 2 O and CO 2 ). The chemicals produced can be used to generate power by the same RSOFC operating in the fuel cell mode or can be stored or converted to other chemicals/fuels for subsequent uses. Similarly, the RSOFC can generate power from biomass-derived fuels and the electricity generated can then be used for a variety of power generation applications.The RSOFC is both the SOFC and SOEC incorporated in a single unit. Since the SOEC is the SOFC operated in reverse mode and traditionally derived from the SOFC, the RSOFC being developed is typically based from the more technologically advanced SOFC. Thus, materials for the RSOFC are those commonly used in the SOFC, i.e., yttria stabilized zirconia (YSZ) for the electrolyte, perovskites (such as lanthanum strontium manganese oxide or LSM, lanthanum strontium cobalt iron oxide or LSCF) for the oxygen electrode, nickel/YSZ cermet for the hydrogen electrode and for stacking, conductive oxides (such as lanthanum strontium chromium perovskite or LSC) or stainless steels for the interconnect (depending on the operating temperature). Like the SOFC, the RSOFC operates in the temperature range of 600 o -1000 o C. Specific operating temperature depends on cell/stack designs and selected materials. 2,3 Solid Oxide Fuel Cell TechnologyThe RSOFC is fundamentally and technologically based on SOFC technology. In the past 20 years, the SOFC has received significant attention as a ...

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Section: Minh and Mogensenmentioning

confidence: 99%