Performance comparison of solid oxide steam electrolysis cells with/without the addition of methane

Patcharavorachot, Yaneeporn; Thongdee, Sirapa; Saebea, Dang; Authayanun, Suthida; Arpornwichanop, Amornchai

doi:10.1016/j.enconman.2016.04.100

Cited by 27 publications

(7 citation statements)

References 25 publications

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“…The concept of the simultaneous cathodic co-electrolysis and the anodic fuel oxidation has been principally examined in the case of methane (Fig. 1a) due to its low cost and abundancy, as well as the possible formation of value-added chemicals from an important greenhouse gas [16][17][18][21][22][23][24][25][26][27][28][29][30] : The Gibbs energy (electrical power demands) and consequently, the reversible potential (E o =ΔGR/nF) of the aforementioned reaction schemes is considerably lower than CO2-H2O coelectrolysis in a conventional electrolyzer (Fig. 1b).…”

Section: Introductionmentioning

confidence: 99%

“…By supplying a fuel instead of air over the anode, the electrical energy demands can be reduced, eliminated, or even reversed. , The concept of the simultaneous cathodic co-electrolysis and the anodic fuel oxidation has been principally examined in the case of methane (Figure a) due to low cost and abundancy, as well as the possible formation of value-added chemicals from an important greenhouse gas − ,− …”

Section: Introductionmentioning

confidence: 99%

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Symmetrical Exsolution of Rh Nanoparticles in Solid Oxide Cells for Efficient Syngas Production from Greenhouse Gases

et al. 2019

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Carbon dioxide and steam solid oxide co-electrolysis is a key technology for exploiting renewable electricity to generate syngas feedstock for the Fischer-Tropsch synthesis. The integration of this process with methane partial oxidation in a single cell can eliminate or even reverse the electrical power demands of co-electrolysis, while simultaneously producing syngas at industrially attractive H2/CO ratios. Nevertheless, this system is rather complex, and requires catalytically active and coke tolerant electrodes. Here, we report on a low-substitution rhodium-titanate perovskite (La0.43Ca0.37Rh0.06Ti0.94O3) electrode for the process, capable of exsolving high Rh nanoparticle populations, and assembled in a symmetrical solid oxide cell configuration. By introducing dry methane to the anode compartment, the electricity demands are impressively decreased, even allowing syngas and electricity cogeneration. To provide further insight on Rh nanoparticles role on methane-to-syngas conversion, we adjusted their size and population by altering the reduction temperature of the perovskite. Our results exemplify how the exsolution concept can be employed to efficiently exploit noble metals for activating low-reactivity greenhouse gases in challenging energy related applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Symmetrical Exsolution of Rh Nanoparticles in Solid Oxide Cells for Efficient Syngas Production from Greenhouse Gases

et al. 2019

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“…505,506 As shown in Figure 34, the supplement of methane brought a voltage reduction of almost 1 V and the value of voltage was negative at 0−700 mA•cm −2 , indicating electricity was generated by the SOFEC. 504 Moreover, nearly 90% of the voltage and specific energy demand for hydrogen production was decreased at higher current density of 700−1000 mA•cm −2 . Enhancement of performance was also realized by the bioethanol-assisted water electrolysis, and the effects became more prominent with increasing the ethanol concentration and working temperature.…”

Section: Performance Of Soecsmentioning

confidence: 99%

Water Electrolysis toward Elevated Temperature: Advances, Challenges and Frontiers

et al. 2023

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Since severe global warming and related climate issues have been caused by the extensive utilization of fossil fuels, the vigorous development of renewable resources is needed, and transformation into stable chemical energy is required to overcome the detriment of their fluctuations as energy sources. As an environmentally friendly and efficient energy carrier, hydrogen can be employed in various industries and produced directly by renewable energy (called green hydrogen). Nevertheless, large-scale green hydrogen production by water electrolysis is prohibited by its uncompetitive cost caused by a high specific energy demand and electricity expenses, which can be overcome by enhancing the corresponding thermodynamics and kinetics at elevated working temperatures. In the present review, the effects of temperature variation are primarily introduced from the perspective of electrolysis cells. Following an increasing order of working temperature, multidimensional evaluations considering materials and structures, performance, degradation mechanisms and mitigation strategies as well as electrolysis in stacks and systems are presented based on elevated temperature alkaline electrolysis cells and polymer electrolyte membrane electrolysis cells (ET-AECs and ET-PEMECs), elevated temperature ionic conductors (ET-ICs), protonic ceramic electrolysis cells (PCECs) and solid oxide electrolysis cells (SOECs).

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“…In the latter portion of the study conducted by Martinez-Frias et al [42], a thermodynamic analysis of a coupled natural gas-assisted SOEC and heat recovery system determined that efficiencies of up to 90% could be attained, based on the total energy supplied to the cell. Computational studies of direct carbon [50] and methane-assisted [51,52] SOECs have also been undertaken to evaluate the effects of various operating conditions and design specifications on cell performance, such as electrode thickness, operating temperature and pressure, inlet molar fraction, and flow velocity. Another study compared the efficiency of carbon monoxide-and methane-assisted electrolyzers to conventional cells, and demonstrated that utilizing either fuel results in greater efficiencies than the latter, with methaneassisted producing the highest values due to the elevated mixtures of hydrogen and carbon monoxide generated by steam reforming [53].…”

Section: Efforts In Fasoecsmentioning

confidence: 99%

Enhancing the Efficiency of Power- and Biomass-to-Liquid Fuel Processes Using Fuel-Assisted Solid Oxide Electrolysis Cells

Nielsen¹,

Ostadi²,

Austbø³

et al. 2022

SSRN Journal

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Performance comparison of solid oxide steam electrolysis cells with/without the addition of methane

Cited by 27 publications

References 25 publications

Symmetrical Exsolution of Rh Nanoparticles in Solid Oxide Cells for Efficient Syngas Production from Greenhouse Gases

Symmetrical Exsolution of Rh Nanoparticles in Solid Oxide Cells for Efficient Syngas Production from Greenhouse Gases

Water Electrolysis toward Elevated Temperature: Advances, Challenges and Frontiers

Enhancing the Efficiency of Power- and Biomass-to-Liquid Fuel Processes Using Fuel-Assisted Solid Oxide Electrolysis Cells

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