Metal Supported Electrolysis Cells

Anke Hagen, Riccardo Caldogno, Federico Capotondo and Xiufu Sun
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Anke Hagen: DTU Energy, Technical University of Denmark, Fysikvej B. 310, 2800 Kongens Lyngby, Denmark
Riccardo Caldogno: DTU Energy, Technical University of Denmark, Fysikvej B. 310, 2800 Kongens Lyngby, Denmark
Federico Capotondo: DTU Energy, Technical University of Denmark, Fysikvej B. 310, 2800 Kongens Lyngby, Denmark
Xiufu Sun: DTU Energy, Technical University of Denmark, Fysikvej B. 310, 2800 Kongens Lyngby, Denmark

Energies, 2022, vol. 15, issue 6, 1-12

Abstract: Solid oxide electrolyser (SOE) technology can become a key player in energy systems, with increasing shares of electricity from fluctuating sources such as wind and solar, contributing to power grid balance and energy storage as well as providing green fuels for transportation. Most mature SOE configurations are electrolyte supported or fuel electrode supported. Metal supported SOE cell configurations are an interesting concept for decreasing costs and increasing robustness. The present study compares fuel electrode supported and metal supported cells in terms of performance and durability under SOE conditions. Special emphasis was on medium temperature operating conditions of 650 °C. Metal supported cells, fabricated using ceramic processing methods, showed a better performance compared to state-of-the-art (SoA) cells with Ni/YSZ fuel electrode supported configuration, fabricated by tape casting and screen printing, under steam electrolysis conditions at 700 and 650 °C. The area specific cell resistance (ASR) was lower by ca. 20% for the metal supported cell in 50% H 2 O in H 2 vs. air at 650 °C. Furthermore, the metal supported cells showed a stable performance—even a slight activation—during long-term steam electrolysis tests over 500 h at 650 °C and −0.25 and −0.5 A/cm 2 , while the SoA reference cell degraded with 13%/1000 h under the same conditions.

Keywords: SOE; metal supported cell; durability (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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