Document Type
Article
Abstract
Electrochemical conversion of CO2 to CO is demonstrated with symmetric-structured metal supported solid oxide cells (MS-SOC). Perovskite Pr0.5Sr0.4Mn0.2Fe0.8O3−δ (PSMF) and Pr6O11 catalysts were infiltrated into the MS-SOC cathode and anode, using 3 cycles with firing at 850 °C and 8 cycles with firing at 800 °C, respectively. Upon reduction during operation, the perovskite PSMF was transformed to Ruddlesden–Popper structure with a highly efficient electrocatalytic activity. The impact of operating temperature (600–800 °C) and overpotential (0–1.8 V) on the CO2 conversion was investigated. The highest CO2 conversion of 57.2% was achieved at 750 °C and 1.8 V. During extended operation for 150 h at 750 °C and 1.2 V, a cell demonstrated relatively stable performance, with initial current density of 535 mA cm−2 and CO2 conversion of 23%. Degradation mechanisms were studied by posttest characterization.
Digital Object Identifier (DOI)
Publication Info
Published in Journal of the Electrochemical Society, Volume 172, Issue 1, 2025, pages 014507-.
Rights
© 2025 The Author(s). Published on behalf of The Electrochemical Society by IOP Publishing Limited. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, https://creativecommons.org/ licenses/by/4.0/)), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited.
APA Citation
Hu, B., Park, K.-Y., Sarycheva, A., Kostecki, R., Chen, F., & Tucker, M. C. (2025). CO2 Electrolysis Using Metal-Supported Solid Oxide Cells with Infiltrated Pr0.5Sr0.4Mn0.2Fe0.8O3−δ Catalyst. Journal of the Electrochemical Society, 172(1), 014507.https://doi.org/10.1149/1945-7111/adaa23