http://www.cnr.it/ontology/cnr/individuo/prodotto/ID231561
Single Step Process for Cathode Supported half-cell (Contributo in atti di convegno)
- Type
- Label
- Single Step Process for Cathode Supported half-cell (Contributo in atti di convegno) (literal)
- Anno
- 2012-01-01T00:00:00+01:00 (literal)
- Alternative label
Gondolini, Angela; Mercadelli, Elisa; Pinasco, Paola; Sanson, Alessandra (2012)
Single Step Process for Cathode Supported half-cell
in 10th European SOFC Forum, 26-29 giugno 2012, Lucerna, Switzerland
(literal)
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- Gondolini, Angela; Mercadelli, Elisa; Pinasco, Paola; Sanson, Alessandra (literal)
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- ID_PUMA: cnr.istec/2012-A2-001. Area di valutazione: 09 - Ingegneria industriale e informatica. (literal)
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- CNR-ISTEC, Faenza (literal)
- Titolo
- Single Step Process for Cathode Supported half-cell (literal)
- Abstract
- Tape casting is a widely used shaping technique to produce large area, flat ceramic electrodes with a microstructure suitable for solid oxide fuel cell (SOFC) applications. This cheap and easily scalable ceramic process generally makes use of pore formers to produce elements with the desidered porosity. Thin film electrolyte is generally fabricated on the green electrode substrate by screen-printing; the entire system is finally co-sintered to obtain the electrolyte/electrode bilayer. In this study the possibility to produce a SOFC half-cell constituted of porous La0.8Sr0.2MnO3-Ce0.8Gd0.2O2 (LSM-GDC) supporting cathode and GDC dense electrolyte in a single thermal step was investigated. To avoid the use of pore formers, the reactive sintering approach was considered. The precursor decomposition during a single thermal treatment of calcining-debonding-sintering was exploit to generate at the same time, the suitable porosity and the La0.8Sr0.2MnO3 phase. Different sintering aids were tested for densifying the GDC layer. Carefully studying the effect of the reactive sintering on the sintering profile and the structure integrity of the cathode-supported half-cell allows to successfully obtain bilayers of 5x5cm2. To the author knowledge this is the first time that a dense electrolyte membrane has been obtained in a single step onto a supporting cathode produced by tape casting adopting the reactive sintering approach. (literal)
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