Fabrication of metal-supported solid oxide fuel cells by sinter-joining method with silver bonding layer

Sanghun Lee, Y. H. Jang, H. Shin, J. Bae

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

3 Scopus citations

Abstract

Solid oxide fuel cell (SOFC) is an energy conversion device which generates electricity from hydrogen. SOFC is attracting attentions because of its high energy conversion efficiency and low material cost. For transportation applications, high mechanical strength is required, which makes ceramic-based SOFC unsuitable. To overcome this limitation, metal-supported SOFC has been proposed. In this work, metal-supported SOFCs are developed by bonding metal substrates to ceramic cells with silver bonding paste. By using silver as bonding material, bonding was performed at temperature lower than 950°C in air atmosphere, which enables full sintering of cathode. Furthermore, electrical conductivity and thermal conductivity are improved, leading to lower ohmic resistance and better temperature distribution of metal-supported cells. As a result, 5 × 5 cm2 metal-supported SOFCs with power density of 433 mW cm-2 at 800°C were fabricated. The metalsupported SOFCs showed 10 times higher mechanical strength than conventional ceramic cells.

Original languageEnglish
Title of host publicationECS Transactions
EditorsS. C. Singhal, T. Kawada
PublisherElectrochemical Society Inc.
Pages2039-2044
Number of pages6
Edition1
ISBN (Electronic)9781607685395, 9781607688150
DOIs
StatePublished - 30 May 2017
Event15th International Symposium on Solid Oxide Fuel Cells, SOFC 2017 - Hollywood, United States
Duration: 23 Jul 201728 Jul 2017

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
Period23/07/1728/07/17

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