Optimization of co-firing conditions for large-area solid oxide fuel cell fabrication by co-tape casting process

Sanghun Lee, Joongmyeon Bae

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

Abstract

A solid oxide fuel cell (SOFCs) is one of the fuel cells, and co-tape casting process has been widely used to fabricate unit cells. In this study, each step of co-tape casting process and corresponding process conditions were studied to fabricate crackand warp-free large-area unit cells. Thermal decomposition rate, flexural strength, and shrinkage behavior were measured by thermo-gravimetric analysis, three point flexural test, and thermomechanical analysis, respectively. As a result, heat treatment steps at 250 °C and 350 °C were adopted. The anode support layer composition with coarse NiO and pore former mixture of 5 wt% of carbon black and graphite was applied to obtain the highest flexural strength. The co-sintering temperature was determined at 1250 °C to have the smallest shrinkage rate difference between anode and electrolyte. Then, a warp-free large-area unit cell with a diameter of 50 mm and open circuit voltage of 1.05V was fabricated.

Original languageEnglish
Title of host publicationProceedings of the 6th European Fuel Cell - Piero Lunghi Conference, EFC 2015
EditorsChiara Barchiesi, Michela Chianella, Viviana Cigolotti
PublisherENEA
Pages309-310
Number of pages2
ISBN (Electronic)9788882863241
StatePublished - 2015
Event6th European Fuel Cell Technology and Applications Conference - Piero Lunghi Conference, EFC 2015 - Naples, Italy
Duration: 16 Dec 201518 Dec 2015

Publication series

NameProceedings of the 6th European Fuel Cell - Piero Lunghi Conference, EFC 2015

Conference

Conference6th European Fuel Cell Technology and Applications Conference - Piero Lunghi Conference, EFC 2015
Country/TerritoryItaly
CityNaples
Period16/12/1518/12/15

Keywords

  • Co-tape casting
  • Flexural strength
  • Shrinkage
  • Solid oxide fuel cell

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