Dependence of electrical properties on thermal reduction of protecting oxides for SOFC interconnect applications

Shu Yi Tsai, Kuan Zong Fung, Chung Ta Ni, Hsin Chia Ho

研究成果: Conference contribution

1 引文 斯高帕斯(Scopus)

摘要

In this study, plasma sprayed (Mn,Co)3O4 (MCO) coatings with spinel structure are used to form protective layer for metallic interconnects of solid oxide fuel cells. The temperature during thermal spraying is high enough to change the crystal structure and conductivity of protective oxides. The structure change is caused by the removal of oxygen ions at higher temperature. This behavior is so called thermal reduction. Furthermore, the transformation of MCO spinel to a NaCl type structure causes the degradation in its conductivity by several orders of magnitude. With better understanding and control of thermal reduction and/or phase transformation, it is believed that the proper heat treatment is an adequate method to obtain desired properties for protective oxide. Thus, the objective of this study is (1) to investigate the influence of thermal reduction on the conductivity and crystal structure; and (2) to improve the performance of interconnect through proper annealing at desired temperatures. XRD, SEM, and impedance spectroscopy are used to characterize the protective oxides before and after annealing and thermal reduction.

原文English
主出版物標題Solid Oxide Fuel Cells 14, SOFC 2015
編輯K. Eguchi, S. C. Singhal
發行者Electrochemical Society Inc.
頁面1641-1647
頁數7
版本1
ISBN(電子)9781607685395
DOIs
出版狀態Published - 2015 一月 1
事件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
持續時間: 2015 七月 262015 七月 31

出版系列

名字ECS Transactions
號碼1
68
ISSN(列印)1938-5862
ISSN(電子)1938-6737

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
國家United Kingdom
城市Glasgow
期間15-07-2615-07-31

    指紋

All Science Journal Classification (ASJC) codes

  • Engineering(all)

引用此

Tsai, S. Y., Fung, K. Z., Ni, C. T., & Ho, H. C. (2015). Dependence of electrical properties on thermal reduction of protecting oxides for SOFC interconnect applications. 於 K. Eguchi, & S. C. Singhal (編輯), Solid Oxide Fuel Cells 14, SOFC 2015 (1 編輯, 頁 1641-1647). (ECS Transactions; 卷 68, 編號 1). Electrochemical Society Inc.. https://doi.org/10.1149/06801.1641ecst