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Boosting intermediate temperature performance of solid oxide fuel cells via a tri‐layer ceria–zirconia–ceria electrolyte

Zhang, Jun; Lenser, Christian ; Russner, Niklas 1; Weber, André 1; Menzler, Norbert H.; Guillon, Olivier
1 Institut für Angewandte Materialien – Elektrochemische Technologien (IAM-ET1), Karlsruher Institut für Technologie (KIT)


Using cost-effective fabrication methods to manufacture a high-performance solid oxide fuel cell (SOFC) is helpful to enhance the commercial viability. Here, we report an anode-supported SOFC with a three-layer Gd$_{0.1}$Ce$_{0.9}$O$_{1.95}$ (gadolinia-doped-ceria [GDC])/Y$_{0.148}$Zr$_{0.852}$O$_{1.926}$ (8YSZ)/GDC electrolyte system. The first dense GDC electrolyte is fabricated by co-sintering a thin, screen-printed GDC layer with the anode support (NiO–8YSZ substrate and NiO–GDC anode) at 1400°C for 5 h. Subsequently, two electrolyte layers are deposited via physical vapor deposition. The total electrolyte thickness is less than 5 μm in an area of 5 × 5 cm$^2$, enabling an area-specific ohmic resistance as low as 0.125 Ω cm$^{−2}$ at 500°C (under open circuit voltage), and contributing to a power density as high as 1.2 W cm$^{−2}$ at 650°C (at an operating cell voltage of 0.7 V, using humidified [10 vol.% H$_2$O] H$_2$ as fuel and air as oxidant). This work provides an effective strategy and shows the great potential of using GDC as an electrolyte for high-performance SOFC at intermediate temperature.

Verlagsausgabe §
DOI: 10.5445/IR/1000145939
Veröffentlicht am 02.12.2022
DOI: 10.1111/jace.18482
Zitationen: 2
Web of Science
Zitationen: 2
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Elektrochemische Technologien (IAM-ET1)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 01.2023
Sprache Englisch
Identifikator ISSN: 0002-7820, 1551-2916
KITopen-ID: 1000145939
HGF-Programm 38.03.02 (POF IV, LK 01) Power-based Fuels and Chemicals
Erschienen in Journal of the American Ceramic Society
Verlag American Ceramic Society
Band 106
Heft 1
Seiten 93-99
Vorab online veröffentlicht am 06.04.2022
Nachgewiesen in Web of Science
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