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DOE OSTI · 2580487

An Active Oxygen Electrode for Proton-Conducting Solid Oxide Electrolysis Cells with High Faradaic Efficiency

Ding, Dong [Idaho National Laboratory] (ORCID:0000000269214504)·Wang, Wanhua [Idaho National Laboratory] (ORCID:0000000164606659)·Zhang, Yuchen [Idaho National Laboratory]·Li, Meng [Idaho National Laboratory] (ORCID:0000000203369271)·Deng, Hao [Idaho National Laboratory]·Zhang, Qian [Unknown]·Zhu, Pengxi [Argonne National Laboratory]·Meng, Yuqing [Unknown]·Ding, Yong [Georgia Institute of Technology]·Sun, Quanwen [New Mexico State University]·Liu, Bin [Kansas State University]·Wu, Wei [Unknown]·Zhang, Weilin [Idaho National Laboratory]·Zhao, Zeyu [Idaho National Laboratory] (ORCID:000000018649925X)
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Abstract

Addressing the challenges posed by inferior electrochemical performance at low temperatures and the uncertain Faradaic efficiency (FE) represents a pivotal undertaking in the development of high performance and efficient proton-conducting solid oxide electrolysis cells (P-SOECs). In this work, a novel oxygen electrode material BaCo0.8Zr0.1Zn0.1O3-d (BCZZ) is first designed and synthesized. At 600 °C, P-SOECs with BCZZ oxygen electrode achieve an electrolysis current density of 1.98 A cm-2 with an ˜90% FE at 1.3 V. Utilizing 1-inch P-SOECs as a reliable platform, the effect of extrinsic operating conditions (i.e., steam concentration, voltage, current density, and temperature) and intrinsic properties of P-SOECs (i.e., electrolyte material and electrolyte thickness) on FE are further systemically investigated, both experimentally and theoretically.

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08 - HYDROGEN30 - DIRECT ENERGY CONVERSIONFaradaic EfficiencyProton-conducting solid oxide electrolysis cellhydrogen generationoxygen electrode

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Ding, Dong [Idaho National Laboratory] (ORCID:0000000269214504), Wang, Wanhua [Idaho National Laboratory] (ORCID:0000000164606659), Zhang, Yuchen [Idaho National Laboratory], Li, Meng [Idaho National Laboratory] (ORCID:0000000203369271), Deng, Hao [Idaho National Laboratory], Zhang, Qian [Unknown], Zhu, Pengxi [Argonne National Laboratory], Meng, Yuqing [Unknown], Ding, Yong [Georgia Institute of Technology], Sun, Quanwen [New Mexico State University], Liu, Bin [Kansas State University], Wu, Wei [Unknown], Zhang, Weilin [Idaho National Laboratory], Zhao, Zeyu [Idaho National Laboratory] (ORCID:000000018649925X). 2025-04-21. An Active Oxygen Electrode for Proton-Conducting Solid Oxide Electrolysis Cells with High Faradaic Efficiency. https://doi.org/10.1002/aenm.202500852

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