Mechanism of chromium poisoning in SOFC cathode investigated by using pattern thin film model electrode

K. Amezawa, Y. Shindo, Y. Fujimaki, Y. Kimura, T. Nakamura, F. Iguchi, K. Yashiro, H. Yugami, T. Kawada

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Citations (Scopus)

Abstract

Cr-poisoning at an SOFC cathode was investigated by using the patterned thin film model electrode of La0.6Sr0.4CoO3-δ on a Ce0.9Gd0.1O1.95 electrolyte. The model electrode was exposed to Cr-containing oxygen gas for a week at 973 K while applying the cathodic bias. After the Cr-poisoning test, the surface morphology and the distribution of Cr were examined by means of SEM and SIMS. Deposition of Cr-containing particles was observed on the electrode surface preferentially near the electrode/electrolyte interface. This result demonstrated that the cathodic polarization accelerated the Cr deposition especially at the area where the cathodic reaction took place.

Original languageEnglish
Title of host publicationECS Transactions
EditorsS. C. Singhal, T. Kawada
PublisherElectrochemical Society Inc.
Pages965-970
Number of pages6
Edition1
ISBN (Electronic)9781607688150, 9781607688150
DOIs
Publication statusPublished - 2017 May 30
Event15th International Symposium on Solid Oxide Fuel Cells, SOFC 2017 - Hollywood, United States
Duration: 2017 Jul 232017 Jul 28

Publication series

NameECS Transactions
Number1
Volume78
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

Conference15th International Symposium on Solid Oxide Fuel Cells, SOFC 2017
Country/TerritoryUnited States
CityHollywood
Period17/7/2317/7/28

Fingerprint

Dive into the research topics of 'Mechanism of chromium poisoning in SOFC cathode investigated by using pattern thin film model electrode'. Together they form a unique fingerprint.

Cite this