High performance micro-monolithic reversible solid oxide electrochemical reactor

Rabuni, Mohamad Fairus and Vatcharasuwan, Nattapat and Li, Tao and Li, Kang (2020) High performance micro-monolithic reversible solid oxide electrochemical reactor. Journal of Power Sources, 458. p. 228026. ISSN 0378-7753, DOI https://doi.org/10.1016/j.jpowsour.2020.228026.

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Official URL: https://doi.org/10.1016/j.jpowsour.2020.228026


Reversible solid oxide electrochemical reactors should work efficiently in both fuel cell and electrolysis modes in order to be considered a practical technology for the energy field. In addition to improved performance, excellent electrode reversibility and stability for long-term operation are crucial for such reactors. Herein, high-performance 6-channel solid oxide electrochemical reactors for reversible operation has been successfully developed using a phase-inversion and sintering method. A unique morphology has been obtained where micro-channels were formed from multiple directions and the interchangeable thickness of sponge-like region between each channel and the exterior surface. Such micro-structured cells, which is made from commercially-available materials Ni-YSZ|YSZ|YSZ-LSM, exhibit superior performance for hydrogen (H2) fuel cell achieving 1.62 W cm−2 at 800 °C. Similarly, excellent performance for carbon dioxide (CO2) electrolysis has been demonstrated, achieving current densities up to 6.3 (3.1) A cm−2 under 1.8 (1.5) V at 800 °C. To our knowledge, such high performances are one of the highest reported values for both H2-fuel cell and CO2 electrolysis. This outstanding performance, coupled with superior mechanical robustness, promises a long-awaited alternative to the conventional tubular counterpart that would allow miniaturized system to be commercially applied in the near future. © 2020 Elsevier B.V.

Item Type: Article
Funders: UK EPSRC Grant no. EP/R029180/1 , EP/M014045/1 , EP/M01486X/1
Uncontrolled Keywords: Micro-monolithic; Phase-inversion; SOER; SOFC; SOE; CO2 electrolysis
Subjects: T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 14 Aug 2020 06:57
Last Modified: 14 Aug 2020 06:57
URI: http://eprints.um.edu.my/id/eprint/25366

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