Idaho National Laboratory Experimental Research in High Temperature Electrolysis for Hydrogen and Syngas Production

Stoots, C. M.; O’Brien, James E.; Herring, J. Stephen; Condie, K. G.; Hartvigsen, Joseph

doi:10.1115/htr2008-58086

Cited by 4 publications

(4 citation statements)

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“…The feasibility of using water electrolyzer configurations, primarily with liquid electrolytes, solid polymer membrane, and solid oxide, for CO 2 reduction or combined CO 2 and H 2 O splitting has been tested by various groups. ,− For example, Bidrawn et al examined the use of a solid oxide electrolyzer fitted with a ceramic electrode based on La 0.8 Sr 0.2 Cr 0.5 Mn 0.5 O 3 infiltrated into a yttria-stabilized zirconia scaffold together with 0.5 wt % Pd supported on 5 wt % Ce 0.48 Zr 0.48 Y 0.04 O 2 for CO 2 reduction at temperatures in excess of 700 °C and demonstrated CO 2 reduction with an efficiency comparable to water splitting . Zhan et al produced syngas by co-electrolysis of steam and CO 2 using a solid oxide electrolyzer at 700−800 °C …”

Section: Discussionmentioning

confidence: 99%

Toward Solar Fuels: Photocatalytic Conversion of Carbon Dioxide to Hydrocarbons

et al. 2010

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The past several decades have seen a significant rise in atmospheric carbon dioxide levels resulting from the combustion of hydrocarbon fuels. A solar energy based technology to recycle carbon dioxide into readily transportable hydrocarbon fuel (i.e., a solar fuel) would help reduce atmospheric CO2 levels and partly fulfill energy demands within the present hydrocarbon based fuel infrastructure. We review the present status of carbon dioxide conversion techniques, with particular attention to a recently developed photocatalytic process to convert carbon dioxide and water vapor into hydrocarbon fuels using sunlight.

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Section: Discussionmentioning

confidence: 99%

Toward Solar Fuels: Photocatalytic Conversion of Carbon Dioxide to Hydrocarbons

et al. 2010

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“…This reaction is much more favorable and decreases ASR. Results from SOEC stacks in an Idaho National Lab study published by Stoots et al show dry CO 2 electrolysis with an approximate ASR of 3.84 Ωcm 2 while results for H 2 O coelectrolysis were around 1.38 Ωcm 2 (Stoots, O'Brien et al 2008) This improvement demonstrates great promise for solid oxide electrolysis ISRU system on Mars that can leverage both the local water and ambient carbon dioxide. For the purpose of this paper and modeling discussion, we will assume an ASR from the system most similar to MOXIE, and estimate our peak dry electrolysis ASR to be similar to the value measured in (Stoots, O'Brien et al 2008) , approximately 4 Ωcm 2 .…”

Section: Wherementioning

confidence: 87%

Thermodynamic model of Mars Oxygen ISRU Experiment (MOXIE)

2016

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As humankind expands its footprint in the solar system, it is increasingly important to make use of the resources already in our solar system to make these missions economically feasible and sustainable. In-Situ Resource Utilization (ISRU), the science of using resources at a destination to support exploration missions, unlocks potential destinations by significantly reducing the amount of resources that need to be launched from Earth. Carbon dioxide is an example of an in-situ resource that comprises 96% of the Martian atmosphere and can be used as a source of oxygen for propellant and life support systems. The Mars Oxygen ISRU Experiment (MOXIE) is a payload being developed for NASA's upcoming Mars 2020 rover. MOXIE will produce oxygen from the Martian atmosphere using solid oxide electrolysis (SOXE). MOXIE is on the order of magnitude of a 1% scale model of an oxygen processing plant that might enable a human expedition to Mars in the 2030's through the production of the oxygen needed for the propellant of a Mars ascent vehicle. MOXIE is essentially an energy conversion system that draws energy from the Mars 2020 rover's radioisotope thermoelectric generator and ultimately converts it to stored energy in oxygen and carbon monoxide molecules. A thermodynamic model of this novel system is used to understand this process in order to derive operating parameters for the experiment. This paper specifically describes the model of the SOXE component. Assumptions and idealizations are addressed, including 1D and 2D simplifications. Operating points are discussed as well as impacts of flow rates and production.

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“…Co-electrolysis of H 2 O + CO 2 can be used to produce syngas, an intermediate energy carrier that can be converted into various practical chemicals/fuels [81,82]. SOECs have been shown to be capable of syngas production by inputs of H 2 O + CO 2 at similar current density ranges to steam electrolysis [71,[83][84][85] although the ASR for electrolysis of CO 2 is generally higher than that of H 2 O (Figure 16.25) [84]. Performance of the CO/CO 2 electrode, however, can be improved by modifying electrode materials and structures [86].…”

Section: Solid Oxide Electrolysis Cell Technology 375mentioning

confidence: 99%

Reversible Solid Oxide Fuel Cell Technology for Hydrogen/Syngas and Power Production

Minh¹

2016

Hydrogen Science and Engineering : Materials, Processes, Systems and Technology

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IntroductionWorld energy consumption is projected to grow by about 56% from 2010 to 2040 (from 524 quadrillion to 820 quadrillion British thermal units (Btu)) with consumption increases from all fuel sources (fossil, nuclear, and renewable) and fossil fuels expected to continue supply much of the energy used worldwide (almost 80%) [1]. As use of fossil fuels is projected to increase, world energyrelated CO 2 emissions will grow from 31 billion metric tons in 2010 to 45 billion metric tons in 2040, a 45% increase [1]. Thus, it is expected that future energy systems should be fuel-flexible (flexibility) (to facilitate integration with any type of energy sources) and environmentally compatible (compatibility) (to reduce CO 2 emissions). In addition, such systems should have the characteristics of capability (useful for different functions), adaptability (suitable for various applications and adaptable to local energy needs), and affordability (competitive in costs) (Figure 16.1). Reversible solid oxide fuel cells (RSOFCs), being developed for hydrogen/syngas production and power generation, potentially have all those desired characteristics and, therefore, can serve as a base technology for green, flexible, and cost-competitive future energy systems [2]. This chapter provides an overview of the RSOFC, discusses its hydrogen/syngas production and power generation operations, and reviews the status of the technology and its applications. Reversible Solid Oxide Fuel Cell Overview Operating PrinciplesA RSOFC is a device that can operate efficiently in both fuel cell mode for power generation and electrolysis mode for chemical production. Thus, in fuel cell

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Idaho National Laboratory Experimental Research in High Temperature Electrolysis for Hydrogen and Syngas Production

Cited by 4 publications

References 5 publications

Toward Solar Fuels: Photocatalytic Conversion of Carbon Dioxide to Hydrocarbons

Toward Solar Fuels: Photocatalytic Conversion of Carbon Dioxide to Hydrocarbons

Thermodynamic model of Mars Oxygen ISRU Experiment (MOXIE)

Reversible Solid Oxide Fuel Cell Technology for Hydrogen/Syngas and Power Production

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