Work

Interfaces and Durability for Different LSCF/CGO/YSZ Systems for IT-SOFC

Year: 2015

Type: conference-paper

Abstract: Ageing investigations of LSCF/CGO/YSZ systems were performed at 700°C in air at OCV up to 530h with different thicknesses of CGO layer (0, 0.11, 0.45, 1.1 and 2 µm). After 530 h, a low series resistance variation is observed and becomes weaker with CGO layer due to a better contact. The polarization resistance evolution is strongly reduced when the CGO layer is added, and the minimum is observed with a CGO thickness of only 0.11 µm. The increase of the polarisation resistance was related to the high frequency contribution which corresponds to the degradation of the ionic transfer at the electrode / electrolyte interface. X-ray microanalyses have shown the diffusion and segregation of Sr at this interface only in the sample without CGO layer.

Source: ECS Transactions

DOI: 10.1149/06602.0109ecst

Authors: Cécile Rossignol, Guillaume Constantin, Pascal Briois, Alain Billard, Elisabeth Djurado, Laurent Dessemond

Institutions: Centre National de la Recherche Scientifique, Laboratoire d’Electrochimie et de Physico-chimie des Matériaux et des Interfaces, Université Grenoble Alpes

Language: English

Topic: Advancements in Solid Oxide Fuel Cells

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: bronze

OpenAlex ID: W2374532913

FWCI: 5.765

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Cited by: 7

Related to: 10