Performance of BaZrO3 based proton conductors as an electrolyte for intermediate temperature operating SOFC

F. Iguchi; T. Tokikawa; T. Miyoshi; T. Tsurui; Y. Nagao; N. Sata; H. Yugami

doi:10.1149/1.2729352

Performance of BaZrO₃ based proton conductors as an electrolyte for intermediate temperature operating SOFC

F. Iguchi, T. Tokikawa, T. Miyoshi, T. Tsurui, Y. Nagao, N. Sata, H. Yugami

ENG - Mechanical Systems Engineering

Tohoku University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

13 Citations (Scopus)

Abstract

Investigative results of Y concentration dependence of total conductivity, and testing results of self-supported cells, gave us knowledge to realize intermediate temperature operating SOFCs using Y-doped BaZrO₃ proton conductors. An increase of Y concentration improved electrical properties of grain boundaries drastically. As a result, total conductivity of a 15mol% Y doped BaZiO3 sample in wet air and wet Ar showed 5mScm^-1 at 400°C The performance of the self-supported cells was very low because of high electrolyte resistance caused by those thicknesses. Open circuit voltage (OCV) was over IV in the temperature range of 600°C to 400°C in spite of low ionic transparent number in wet air at 600°C Degradation of electrolytes was not observed during tests. From those results, electrode-supported cells using Y-doped BaZrO₃ will show sufficient cell performance for intermediate temperature SOFCs.

Original language	English
Title of host publication	ECS Transactions - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
Pages	2331-2336
Number of pages	6
Edition	1 PART 2
DOIs	https://doi.org/10.1149/1.2729352
Publication status	Published - 2007
Event	10th International Symposium on Solid Oxide Fuel Cells, SOFC-X - , Japan Duration: 2007 Jun 3 → 2007 Jun 8

Publication series

Name	ECS Transactions
Number	1 PART 2
Volume	7
ISSN (Print)	1938-5862
ISSN (Electronic)	1938-6737

Conference

Conference	10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
Country/Territory	Japan
Period	07/6/3 → 07/6/8

Access to Document

10.1149/1.2729352

Cite this

Iguchi, F., Tokikawa, T., Miyoshi, T., Tsurui, T., Nagao, Y., Sata, N., & Yugami, H. (2007). Performance of BaZrO₃ based proton conductors as an electrolyte for intermediate temperature operating SOFC. In ECS Transactions - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X (1 PART 2 ed., pp. 2331-2336). (ECS Transactions; Vol. 7, No. 1 PART 2). https://doi.org/10.1149/1.2729352

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title = "Performance of BaZrO3 based proton conductors as an electrolyte for intermediate temperature operating SOFC",

abstract = "Investigative results of Y concentration dependence of total conductivity, and testing results of self-supported cells, gave us knowledge to realize intermediate temperature operating SOFCs using Y-doped BaZrO3 proton conductors. An increase of Y concentration improved electrical properties of grain boundaries drastically. As a result, total conductivity of a 15mol% Y doped BaZiO3 sample in wet air and wet Ar showed 5mScm-1 at 400°C The performance of the self-supported cells was very low because of high electrolyte resistance caused by those thicknesses. Open circuit voltage (OCV) was over IV in the temperature range of 600°C to 400°C in spite of low ionic transparent number in wet air at 600°C Degradation of electrolytes was not observed during tests. From those results, electrode-supported cells using Y-doped BaZrO3 will show sufficient cell performance for intermediate temperature SOFCs.",

author = "F. Iguchi and T. Tokikawa and T. Miyoshi and T. Tsurui and Y. Nagao and N. Sata and H. Yugami",

year = "2007",

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series = "ECS Transactions",

number = "1 PART 2",

pages = "2331--2336",

booktitle = "ECS Transactions - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X",

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Iguchi, F, Tokikawa, T, Miyoshi, T, Tsurui, T, Nagao, Y, Sata, N & Yugami, H 2007, Performance of BaZrO₃ based proton conductors as an electrolyte for intermediate temperature operating SOFC. in ECS Transactions - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X. 1 PART 2 edn, ECS Transactions, no. 1 PART 2, vol. 7, pp. 2331-2336, 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X, Japan, 07/6/3. https://doi.org/10.1149/1.2729352

Performance of BaZrO₃ based proton conductors as an electrolyte for intermediate temperature operating SOFC. / Iguchi, F.; Tokikawa, T.; Miyoshi, T. et al.
ECS Transactions - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X. 1 PART 2. ed. 2007. p. 2331-2336 (ECS Transactions; Vol. 7, No. 1 PART 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Sata, N.

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AB - Investigative results of Y concentration dependence of total conductivity, and testing results of self-supported cells, gave us knowledge to realize intermediate temperature operating SOFCs using Y-doped BaZrO3 proton conductors. An increase of Y concentration improved electrical properties of grain boundaries drastically. As a result, total conductivity of a 15mol% Y doped BaZiO3 sample in wet air and wet Ar showed 5mScm-1 at 400°C The performance of the self-supported cells was very low because of high electrolyte resistance caused by those thicknesses. Open circuit voltage (OCV) was over IV in the temperature range of 600°C to 400°C in spite of low ionic transparent number in wet air at 600°C Degradation of electrolytes was not observed during tests. From those results, electrode-supported cells using Y-doped BaZrO3 will show sufficient cell performance for intermediate temperature SOFCs.

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