Triple phase boundary reaction in a mixed-conducting SOFC cathode

K. Amezawa, Y. Fujimaki, K. Mizuno, Y. Kimura, T. Nakamura, K. Nitta, Y. Terada, F. Iguchi, K. Yashiro, H. Yugami, T. Kawada

研究成果: Conference contribution

8 被引用数 (Scopus)

抄録

The contribution of the triple phase boundary reaction in a mixed ionic and electronic conducting (MIEC) cathode in solid oxide fuel cells (SOFCs) was investigated. For this purpose, patterned thin film electrodes with or without triple phase boundaries, which simplified the microstructure of a practical porous electrode, were proposed and fabricated. In this work, an La0.6Sr0.4CoO3-δ (LSC) electrode on a Ce0.9Gd0.1O1.95 electrolte was chosen as a model SOFC MIEC cathode. Effective reaction area was evaluated by means of operando micro X-ray absorption spectroscopy with the model electrodes under 10"2 bar of p(O2) at 873 K. It was found that the introduction of triple phase boundaries shortened the effective reaction area. The results may indicate the non-negligible contribution of the triple phase boundary reaction even in SOFC MIEC cathodes.

本文言語English
ホスト出版物のタイトルSolid-Gas Electrochemical Interfaces 2 - SGEI 2
編集者B. Yildiz, S. Adler, E. Ivers-Tiffee, T. Kawada
出版社Electrochemical Society Inc.
ページ41-47
ページ数7
10
ISBN(電子版)9781607688136
DOI
出版ステータスPublished - 2017
イベントSymposium on Solid-Gas Electrochemical Interfaces 2, SGEI 2017 - 231st ECS Meeting 2017 - New Orleans, United States
継続期間: 2017 5 282017 6 1

出版物シリーズ

名前ECS Transactions
番号10
77
ISSN(印刷版)1938-6737
ISSN(電子版)1938-5862

Other

OtherSymposium on Solid-Gas Electrochemical Interfaces 2, SGEI 2017 - 231st ECS Meeting 2017
CountryUnited States
CityNew Orleans
Period17/5/2817/6/1

ASJC Scopus subject areas

  • Engineering(all)

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