Reversible Solid Oxide Cells: Durability of fuel electrodes against voltage cycling

Katsuya Natsukoshi; Kengo Miyara; Yuya Tachikawa; Junko Matsuda; Shunsuke Taniguchi; George F. Harrington; Kazunari Sasakia-E

doi:10.1149/10301.0375ecst

Reversible Solid Oxide Cells: Durability of fuel electrodes against voltage cycling

Katsuya Natsukoshi, Kengo Miyara, Yuya Tachikawa, Junko Matsuda, Shunsuke Taniguchi, George F. Harrington, Kazunari Sasakia-E

Department of Chemistry

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

3 Citations (SciVal)

Abstract

Reversible Solid Oxide Cells (r-SOCs) are an attractive electrochemical energy conversion technology that can act as both a Solid Oxide Fuel Cell (SOFC) for power generation, and a Solid Oxide Electrolysis Cell (SOEC) for steam electrolysis. Unfortunately, Ni-zirconia cermet, which is widely used in SOFCs, has the problem that the electronically conductive phases, Ni, agglomerates due to redox reactions and breaks the conductive path, resulting in performance degradation. In this study, we fabricated an alternative fuel electrode with a stable conductive structure using both an ionic conductor Ce0.9Gd0.1O2 (GDC) and an electronic conductor Sr_0.9La_0.1TiO₃(LST), and we co-impregnate Ni and GDC to the fuel electrode using only Ni as an electrocatalyst. The durability of the conventional fuel electrode and our alternative fuel electrode was compared and evaluated, and the potential of the alternative fuel electrode material was demonstrated.

Original language	English
Title of host publication	17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
Publisher	IOP Publishing
Pages	375-382
Number of pages	8
Edition	1
ISBN (Electronic)	9781607685395
DOIs	https://doi.org/10.1149/10301.0375ecst
Publication status	Published - 18 Jul 2021
Event	17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021 - Stockholm, Sweden Duration: 18 Jul 2021 → 23 Jul 2021

Publication series

Name	ECS Transactions
Number	1
Volume	103
ISSN (Print)	1938-6737
ISSN (Electronic)	1938-5862

Conference

Conference	17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
Country/Territory	Sweden
City	Stockholm
Period	18/07/21 → 23/07/21

Acknowledgements

Collaborative support by Prof. H. L. Tuller, Prof. B. Yildiz, and Prof. J. L. M. Rupp at Massachusetts Institute of Technology (MIT) is gratefully acknowledged.

Funding

A part of this study was supported by "Research and Development Program for Promoting Innovative Clean Energy Technologies Through International Collaboration"of the New Energy and Industrial Technology Development Organization (NEDO).

ASJC Scopus subject areas

General Engineering

Access to Document

10.1149/10301.0375ecst

Cite this

Natsukoshi, K., Miyara, K., Tachikawa, Y., Matsuda, J., Taniguchi, S., Harrington, G. F., & Sasakia-E, K. (2021). Reversible Solid Oxide Cells: Durability of fuel electrodes against voltage cycling. In 17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021 (1 ed., pp. 375-382). (ECS Transactions; Vol. 103, No. 1). IOP Publishing. https://doi.org/10.1149/10301.0375ecst

Reversible Solid Oxide Cells: Durability of fuel electrodes against voltage cycling. / Natsukoshi, Katsuya; Miyara, Kengo; Tachikawa, Yuya et al.
17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021. 1. ed. IOP Publishing, 2021. p. 375-382 (ECS Transactions; Vol. 103, No. 1).

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

Natsukoshi, K, Miyara, K, Tachikawa, Y, Matsuda, J, Taniguchi, S, Harrington, GF & Sasakia-E, K 2021, Reversible Solid Oxide Cells: Durability of fuel electrodes against voltage cycling. in 17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021. 1 edn, ECS Transactions, no. 1, vol. 103, IOP Publishing, pp. 375-382, 17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021, Stockholm, Sweden, 18/07/21. https://doi.org/10.1149/10301.0375ecst

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abstract = "Reversible Solid Oxide Cells (r-SOCs) are an attractive electrochemical energy conversion technology that can act as both a Solid Oxide Fuel Cell (SOFC) for power generation, and a Solid Oxide Electrolysis Cell (SOEC) for steam electrolysis. Unfortunately, Ni-zirconia cermet, which is widely used in SOFCs, has the problem that the electronically conductive phases, Ni, agglomerates due to redox reactions and breaks the conductive path, resulting in performance degradation. In this study, we fabricated an alternative fuel electrode with a stable conductive structure using both an ionic conductor Ce0.9Gd0.1O2 (GDC) and an electronic conductor Sr0.9La0.1TiO3(LST), and we co-impregnate Ni and GDC to the fuel electrode using only Ni as an electrocatalyst. The durability of the conventional fuel electrode and our alternative fuel electrode was compared and evaluated, and the potential of the alternative fuel electrode material was demonstrated.",

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AU - Harrington, George F.

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AB - Reversible Solid Oxide Cells (r-SOCs) are an attractive electrochemical energy conversion technology that can act as both a Solid Oxide Fuel Cell (SOFC) for power generation, and a Solid Oxide Electrolysis Cell (SOEC) for steam electrolysis. Unfortunately, Ni-zirconia cermet, which is widely used in SOFCs, has the problem that the electronically conductive phases, Ni, agglomerates due to redox reactions and breaks the conductive path, resulting in performance degradation. In this study, we fabricated an alternative fuel electrode with a stable conductive structure using both an ionic conductor Ce0.9Gd0.1O2 (GDC) and an electronic conductor Sr0.9La0.1TiO3(LST), and we co-impregnate Ni and GDC to the fuel electrode using only Ni as an electrocatalyst. The durability of the conventional fuel electrode and our alternative fuel electrode was compared and evaluated, and the potential of the alternative fuel electrode material was demonstrated.

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Reversible Solid Oxide Cells: Durability of fuel electrodes against voltage cycling

Abstract

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