Advances and challenges with SOEC high temperature co-electrolysis of CO2/H2O: Materials development and technological design

Zong, Shuang; Zhao, Xiufei; Jewell, Linda L.; Zhang, Yusheng; Liu, Xinying

doi:10.1016/j.ccst.2024.100234

Carbon Capture Science & Technology

2024

DOI: 10.1016/j.ccst.2024.100234

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Advances and challenges with SOEC high temperature co-electrolysis of CO2/H2O: Materials development and technological design

Shuang Zong,

Xiufei Zhao,

Linda L. Jewell

et al.

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Cited by 4 publications

References 131 publications

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Sustainable Hydrogen Storage and Methanol Synthesis Through Solar‐Powered Co‐Electrolysis Using SOEC

Khan,

Abid,

Chen

et al. 2024

Energy Storage

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Syngas rich in hydrogen, generated through renewable‐powered co‐electrolysis of water (H2O) and carbon dioxide (CO2) using solid oxide electrolysis cells (SOEC), have gained significant attention due to its high efficiency and conversion rates. This method offers a promising solution for mitigating global warming and reducing CO2 emissions by enabling the storage of intermittent renewable energy. This study investigates solar‐integrated co‐electrolysis of H2O and CO2 via SOEC to produce hydrogen‐rich syngas, which is then utilized for methanol synthesis through a series of heat exchangers and compressors. Parabolic dish solar collectors supply thermal energy, while photovoltaic modules provide electricity for SOEC operation. CO2 from industrial processes is captured and combined with steam at the SOEC inlet for co‐electrolysis. The proposed system is modeled using engineering equation solver software, incorporating mass, energy, and exergy balance equations. The system's performance is analyzed by varying key parameters such as direct normal irradiance, heat exchanger effectiveness, current density, cell temperature, and pressure. The proposed system achieves a solar‐to‐fuel efficiency of 29.1%, with a methanol production rate of 41.5 kg per hour. Furthermore, an economic analysis was conducted to determine the levelized cost of fuel.

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Sustainable Hydrogen Storage and Methanol Synthesis Through Solar‐Powered Co‐Electrolysis Using SOEC

Khan,

Abid,

Chen

et al. 2024

Energy Storage

View full text Add to dashboard Cite

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Projecting technological advancement of electrolyzers and the impact on the competitiveness of hydrogen

Bühler,

Möst

2025

International Journal of Hydrogen Energy

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Sintering Aids Strategies for Improving LSGM and LSF Materials for Symmetrical Solid Oxide Fuel Cell

Gorgeev,

Antonova,

Osinkin

2024

Applied Sciences

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R&D in the area of high-temperature symmetrical electrochemical devices is needed to meet the challenges of hydrogen energy. In the present study, the effect of Fe2O3 and CuO sintering aids on the electrochemical properties of the highly conductive solid electrolyte La0.8Sr0.2Ga0.8Mg0.2O3−δ and La0.6Sr0.4FeO3−δ electrodes for symmetrical solid oxide fuel cells was investigated. It is shown that the use of sintering aids leads to an improvement in grain boundary conductivity and allows us to reduce the sintering temperature to obtain a dense electrolyte with the same level of conductivity. It is shown for the first time that the nature of the sintering aids and the sintering temperature affect the La0.6Sr0.4FeO3−δ electrode activity differently depending on the gas environment (air or hydrogen). On the basis of the analysis of the impedance spectra by the distribution of relaxation times, assumptions were made about the nature of the rate-determining steps of hydrogen oxidation and oxygen reduction. It is shown that the nature of the rate-determining steps can change depending on the electrode sintering temperature. It was found that among the studied electrodes, La0.6Sr0.4FeO3−δ with 3 wt.% Fe2O3 sintered at 1050 °C is optimal in terms of activity in oxidizing and reducing atmospheres.

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Advances and challenges with SOEC high temperature co-electrolysis of CO2/H2O: Materials development and technological design

Cited by 4 publications

References 131 publications

Sustainable Hydrogen Storage and Methanol Synthesis Through Solar‐Powered Co‐Electrolysis Using SOEC

Sustainable Hydrogen Storage and Methanol Synthesis Through Solar‐Powered Co‐Electrolysis Using SOEC

Projecting technological advancement of electrolyzers and the impact on the competitiveness of hydrogen

Sintering Aids Strategies for Improving LSGM and LSF Materials for Symmetrical Solid Oxide Fuel Cell

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