Electro-chemical potential analysis of zirconium based on the reaction-diffusion equations of oxygen ion and electron considering phase transformation

M. Muramatsu, H. Kishimoto, K. Yamaji, K. Yashiro, T. Kawada, K. Terada, H. Yokokawa

研究成果: Conference contribution

4 被引用数 (Scopus)

抄録

Phase transformations induced by the precipitation of Ni in Ni-doped 8Yttria-Stabilized Zirconia (8YSZ), which is a typical electrolyte material, have recently been known to cause electrochemical degradation of Solid Oxide Fuel Cells (SOFC). Numerical simulations are conducted to evaluate the oxygen potential distributions and then to estimate the degree of transformation during long-term operations that can be determined by the equilibrium partial pressure between Ni and NiO. The simulation results indicate that the oxidation-reduction front inside the electrolyte tends to move towards the anode side reflecting the difference in electrical conductivities with different time constants between the oxidation and reduction regions.

本文言語English
ホスト出版物のタイトルSolid Oxide Fuel Cells 14, SOFC 2015
編集者S. C. Singhal, K. Eguchi
出版社Electrochemical Society Inc.
ページ2363-2372
ページ数10
1
ISBN(電子版)9781623322717
DOI
出版ステータスPublished - 2015
イベント14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage - Glasgow, United Kingdom
継続期間: 2015 7月 262015 7月 31

出版物シリーズ

名前ECS Transactions
番号1
68
ISSN(印刷版)1938-6737
ISSN(電子版)1938-5862

Other

Other14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage
国/地域United Kingdom
CityGlasgow
Period15/7/2615/7/31

ASJC Scopus subject areas

  • 工学(全般)

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