Materials and Concepts for Full Ceramic SOFCs with Focus on Carbon Containing Fuels

Peter Holtappels, Bhaskar Reddy Sudireddy, Sune Veltzé, Tania Ramos

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

Abstract

Todays' solid oxide fuels cells based on composite Ni-cermet anodes have been developed op to reasonable levels of performance and durability. However, especially for small combined heat and power supply systems, known failure mechanisms e.g. re-oxidation, sulfur tolerance and coking have stimulated the development for full ceramic anodes based on strontium titanates. Furthermore, the Ni-cermet is primarily a hydrogen oxidation electrode and efficiency losses might occur when operating on carbon containing fuels. In a recent European project full ceramic cells comprising CGO/Ni infiltrated Nb-doped SrTiO3 anodes, and LSM/YSZ cathodes have been developed and tested as single 5 x 5 cm2 cells. The initial performance reached 0.4 W/cm2 at 850 °C and redox tolerance has been proven. The cell concept provides flexibility with respect to the used electro catalysts and their impact on power output, stability, and S- tolerance has been investigated. These results and an assessment on a 1 kW system level using CPOX reformed natural gas will be reviewed and further perspectives of the cell concept discussed, especially with respect to efficient operation on high carbon containing fuels.
Original languageEnglish
Publication date2014
Publication statusPublished - 2014
EventCIMTEC 2014: 6th Forum on New Materials - Montecatini Terme, Italy
Duration: 15 Jun 201419 Jun 2014
Conference number: 6

Conference

ConferenceCIMTEC 2014
Number6
CountryItaly
CityMontecatini Terme
Period15/06/201419/06/2014

Keywords

  • FA-3:IL02

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