Multilevel modeling of solid oxide electrolysis

Kupecki, Jakub; Mastropasqua, Leonardo; Motyliński, Konrad; Ferrero, Domenico

doi:10.1016/b978-0-12-818285-7.00005-8

Cited by 5 publications

(6 citation statements)

References 91 publications

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“…However, limitations are the costs and time required to conduct such complex calculations and simulations. [393] Moreover, a 3D model of a high-temperature SOEC stack made up of 60 planar cells was developed by Hawkes et al [394] In this study, the physical stack data provided by Ceramatec, Inc. and the evaluation at the Idaho National Laboratory served as the basis for the technical specification and performance data of the stack used in the simulations. On the other hand, Ansys Fluent Workbench was used to construct the numerical tool.…”

Section: Modelling Of Water Electrolyzersmentioning

confidence: 99%

Pathways towards Achieving High Current Density Water Electrolysis: from Material Perspective to System Configuration

et al. 2023

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Hydrogen is a clean, flexible, powerful energy vector that can be leveraged as a promising alternative to fossil fuels. Additionally, green hydrogen production has been recognized as one of the most prevalent solutions to decarbonize the energy system. Water electrolysis studies have increased throughout the decade as higher industrial interest comes into play. The catalyst, system design, and configuration act in a congenial manner to deliver high‐performing water electrolysis. Despite performance targets peaking at high current densities, the current status of water electrolyzer technologies would require more research efforts to achieve such goals. This work presents a comprehensive review of how catalysts and electrolyzer designs can be enhanced to attain high current density water electrolysis. Modification strategies of catalysts, advances in characterization and modelling, and optimizing system designs are highlighted. Furthermore, this paper aims to elucidate the future research direction of water electrolysis to bridge the laboratory‐to‐industry gap.

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Section: Modelling Of Water Electrolyzersmentioning

confidence: 99%

Pathways towards Achieving High Current Density Water Electrolysis: from Material Perspective to System Configuration

et al. 2023

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“…The term "n" is the number of electrons involved in the reducing reaction of CO 2 . In the case of CO, n is equal to 2, according to Equation (16), whereas in the case of CH 4 , n is equal to 8 according to Equation (18). F is the Faradaic constant.…”

Section: Coated Cellmentioning

confidence: 99%

“…However, the use of metallic Ni combined with yttria-stabilised zirconia (YSZ) as a fuel electrode (cathode) has an effect on the quality of the outlet gas. In practise, under conventional operating conditions, the fuel in the outlet gas stream is constituted only of H 2 and CO [15][16][17][18]. Furthermore, SOECs fed with CO 2 and H 2 O were operated at high temperatures (above 800 • C) to minimise the effect of carbon deposition on Ni [19,20].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Ni-Modified LSFCO Promoting Layer on the Gas Produced through Co-Electrolysis of CO2 and H2O at Intermediate Temperatures

2021

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The co-electrolysis of CO2 and H2O at an intermediate temperature is a viable approach for the power-to-gas conversion that deserves further investigation, considering the need for green energy storage. The commercial solid oxide electrolyser is a promising device, but it is still facing issues concerning the high operating temperatures and the improvement of gas value. In this paper we reported the recent findings of a simple approach that we have suggested for solid oxide cells, consisting of the addition of a functional layer coated to the fuel electrode of commercial electrochemical cells. This approach simplifies the transition to the next generation of cells manufactured with the most promising materials currently developed, and improves the gas value in the outlet stream of the cell. Here, the material in use as a coating layer consists of a Ni-modified La0.6Sr0.4Fe0.8Co0.2O3, which was developed and demonstrated as a promising fuel electrode for solid oxide fuel cells. The results discussed in this paper prove the positive role of Ni-modified perovskite as a coating layer for the cathode, since an improvement of about twofold was obtained as regards the quality of gas produced.

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“…In commercial SOECs, materials and architecture resemble those used in solid oxide fuel cells (SOFCs) because of their robustness(8). Nevertheless, combining metallic Ni with yttria-stabilized zirconia (YSZ) as a fuel electrode (cathode) affects outgoing gases quality (9). Under conventional operating conditions, only hydrogen and carbon monoxide constitute the fuel in the outlet gas stream.…”

Section: Introductionmentioning

confidence: 99%

Co-Electrolysis of CO₂ and H₂O Using an Exsoluted Perovskite Layer

Faro¹,

Zignani²,

Vecino-Mantilla³

et al. 2023

ECS Trans.

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Solid oxide electrolysers (SOECs) are a key class of technology that offers an efficient solution to storing renewable energy. One of the key characteristics of this technology is its ability to reduce both H2O and CO2. Currently, commercial cells are adapted from those made for power generation (i.e. SOFCs) and are not suitable for generating gas of higher quality than syngas due to the limited behaviour of the cells. Electrochemical analyses and gas chromatography were used to examine the ability of SOEC cells to improve gas quality. With the addition of a functional layer to the cathode, we achieved a complementary effect between electrochemical mechanisms taking place at the cathode and catalytic mechanisms involving CO2 and CO methanation. In spite of the fact that the results could be significantly improved, this approach demonstrated the potential for CO2 and H2O co-electrolysis at intermediate temperatures.

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Multilevel modeling of solid oxide electrolysis

Cited by 5 publications

References 91 publications

Pathways towards Achieving High Current Density Water Electrolysis: from Material Perspective to System Configuration

Pathways towards Achieving High Current Density Water Electrolysis: from Material Perspective to System Configuration

The Effect of Ni-Modified LSFCO Promoting Layer on the Gas Produced through Co-Electrolysis of CO2 and H2O at Intermediate Temperatures

Co-Electrolysis of CO₂ and H₂O Using an Exsoluted Perovskite Layer

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Multilevel modeling of solid oxide electrolysis

Cited by 5 publications

References 91 publications

Pathways towards Achieving High Current Density Water Electrolysis: from Material Perspective to System Configuration

Pathways towards Achieving High Current Density Water Electrolysis: from Material Perspective to System Configuration

The Effect of Ni-Modified LSFCO Promoting Layer on the Gas Produced through Co-Electrolysis of CO2 and H2O at Intermediate Temperatures

Co-Electrolysis of CO2 and H2O Using an Exsoluted Perovskite Layer

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Co-Electrolysis of CO₂ and H₂O Using an Exsoluted Perovskite Layer