Fabrication of Metal-Supported Proton-Conducting Electrolysers with Thin Film Sr- and Ce-Doped BZY Electrolyte

Autor:	Truls Norby, Amir Masoud Dayaghi, Per Martin Rørvik, Yngve Larring, M. Stange, Reidar Haugsrud, Christelle Denonville
Rok vydání:	2019
Předmět:	Fabrication Materials science Chemical engineering Open-circuit voltage visual_art Electrode visual_art.visual_art_medium Ceramic Electrolyte Thin film Layer (electronics) Pulsed laser deposition
Zdroj:	ECS Transactions. 91:941-949
ISSN:	1938-5862 1938-6737
DOI:	10.1149/09101.0941ecst
Popis:	In this work, we present fabrication and initial testing of metal-supported proton ceramic electrolyser (MS-PCEC) single cells with a thin electrolyte. Plansee ITM porous metal is used as metal support. Spray-coating is used to deposit a conducting layer of La1-xSrxTi1-yNiyO3-δ (LSTN) which is used for low temperature (600-800 °C) deposition of a gas-tight, thin-film layer (~2 μm) of electrolyte by pulsed laser deposition (PLD). Post-annealing of the electrolyte is evaluated to improve its performance. In order to have a smaller thermal expansion coefficient (TEC) mismatch towards LSTN (~10-11 × 10-6 K-1), we developed a new Sr- and Ce-doped proton-conducting electrolyte, yielding a larger TEC (~10-11 × 10-6 K-1) compared to BZY (~8 × 10-6 K-1). The cell with Pt as air electrode shows acceptable open circuit voltage and low overpotentials at 600 °C, demonstrating the potential of developing the first working MS-PCEC.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::63b9b868111601f2470c5ffcec0a7fd3 https://doi.org/10.1149/09101.0941ecst Zobrazit plný text záznamu