A parametric study of SOFC performances with multi-stage electrochemical oxidation for enhancement of electric efficiency

Y. Matsuzaki; Y. Tachikawa; T. Hatae; H. Matsumoto; S. Taniguchi; K. Sasaki

doi:10.1149/06801.1961ecst

A parametric study of SOFC performances with multi-stage electrochemical oxidation for enhancement of electric efficiency

Y. Matsuzaki, Y. Tachikawa, T. Hatae, H. Matsumoto, S. Taniguchi, K. Sasaki

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

1 Citation (Scopus)

Abstract

The solid-state ceramic construction of SOFCs enables high fuel to electricity conversion efficiencies of as high as 50 to 60 percent LHV in high temperature operation, and allows more flexibility in fuel choice. In this study, we have developed a symbolic analysis method to investigate the availability of variable parameters appearing in multi-stage electrochemical oxidation mechanism that is expected to further improve the electric efficiencies of SOFCs. In the flow system of the multi-stage oxidation, the fuel utilization, Uf, at the most downstream stack, Uf_M, is expressed as a function of number of stacks, n, and total fuel utilization, Uf_T. When n = 10 and Uf_T = 85%, Uf_M is calculated to be 36%, which is much smaller than Uf_T. Therefore, if the most downstream stack has high robustness against lean fuel gas, Uf_T could be set to higher values without serious degradation by using this flow system.

Original language	English
Title of host publication	Solid Oxide Fuel Cells 14, SOFC 2015
Editors	K. Eguchi, S. C. Singhal
Publisher	Electrochemical Society Inc.
Pages	1961-1968
Number of pages	8
Edition	1
ISBN (Electronic)	9781607685395
DOIs	https://doi.org/10.1149/06801.1961ecst
Publication status	Published - Jan 1 2015
Event	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 Duration: Jul 26 2015 → Jul 31 2015

Publication series

Name	ECS Transactions
Number	1
Volume	68
ISSN (Print)	1938-5862
ISSN (Electronic)	1938-6737

Other

Other	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
Country	United Kingdom
City	Glasgow
Period	7/26/15 → 7/31/15

All Science Journal Classification (ASJC) codes

Engineering(all)

Access to Document

10.1149/06801.1961ecst

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Matsuzaki, Y., Tachikawa, Y., Hatae, T., Matsumoto, H., Taniguchi, S., & Sasaki, K. (2015). A parametric study of SOFC performances with multi-stage electrochemical oxidation for enhancement of electric efficiency. In K. Eguchi, & S. C. Singhal (Eds.), Solid Oxide Fuel Cells 14, SOFC 2015 (1 ed., pp. 1961-1968). (ECS Transactions; Vol. 68, No. 1). Electrochemical Society Inc.. https://doi.org/10.1149/06801.1961ecst

A parametric study of SOFC performances with multi-stage electrochemical oxidation for enhancement of electric efficiency. / Matsuzaki, Y.; Tachikawa, Y.; Hatae, T.; Matsumoto, H.; Taniguchi, S.; Sasaki, K.

Solid Oxide Fuel Cells 14, SOFC 2015. ed. / K. Eguchi; S. C. Singhal. 1. ed. Electrochemical Society Inc., 2015. p. 1961-1968 (ECS Transactions; Vol. 68, No. 1).

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

Matsuzaki, Y, Tachikawa, Y, Hatae, T, Matsumoto, H , Taniguchi, S & Sasaki, K 2015, A parametric study of SOFC performances with multi-stage electrochemical oxidation for enhancement of electric efficiency. in K Eguchi & SC Singhal (eds), Solid Oxide Fuel Cells 14, SOFC 2015. 1 edn, ECS Transactions, no. 1, vol. 68, Electrochemical Society Inc., pp. 1961-1968, 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, 7/26/15. https://doi.org/10.1149/06801.1961ecst

Matsuzaki Y, Tachikawa Y, Hatae T, Matsumoto H , Taniguchi S , Sasaki K. A parametric study of SOFC performances with multi-stage electrochemical oxidation for enhancement of electric efficiency. In Eguchi K, Singhal SC, editors, Solid Oxide Fuel Cells 14, SOFC 2015. 1 ed. Electrochemical Society Inc. 2015. p. 1961-1968. (ECS Transactions; 1). https://doi.org/10.1149/06801.1961ecst

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