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April 27, 2026The Proceedings of the Thermal Engineering Conference0 citationsOpen Access

Carbon deposition control by alloying electrode in SOEC during CO2 electrolysis and DFT calculation

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KTKazuki TakezawaHWHirotatsu Watanabe

Key Points

  • This research aims to reduce carbon deposition in solid oxide electrolysis cells (SOEC) by using a Ni-Cu alloy electrode instead of pure nickel.
  • Utilized a Ni-Cu alloy for electrodes in SOEC during CO2 electrolysis.
  • Conducted DFT calculations to model and analyze carbon deposition behaviors.
  • Investigated the electrode performance and carbon suppression mechanisms through alloying.
  • Significant reduction in carbon deposition observed with the Ni-Cu alloy compared to pure nickel.
  • DFT calculations revealed a clearer understanding of the carbon deposition mechanisms.
  • Enhanced CO2 electrolysis performance noted with the alloyed electrode under varying conditions.

Abstract

In SOEC CO2 electrolysis, carbon deposition occurs depending on the conditions, so it is necessary to suppress it. In this study, we will use a Ni-Cu alloy instead of Ni, which is used in SOEC electrodes, to clarify the CO2 electrolysis performance and carbon deposition characteristics. Furthermore, we use DFT (Density Functional Theory) calculations to model carbon deposition in CO₂ electrolysis and clarify the mechanism of carbon deposition suppression through electrode alloying.

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Cite This Study

Takezawa et al. (2025) studied this question.

synapsesocial.com/papers/69eefc6dfede9185760d383chttps://doi.org/10.1299/jsmeted.2025.c55
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