Title: LST27 anodes for SOFCs : redox stable and sulfur tolerant material
Authors : Madi, Hossein
Burnat, Dariusz Artur
Mai, Andreas
Heel, Andre
Van Herle, Jan
Proceedings: Proceedings of 13th European SOFC & SOE Forum 2018
Conference details: 13th European SOFC & SOE Forum 2018, Lucerne, 3-6 July 2018
Issue Date: 4-Jul-2018
License (according to publishing contract) : Not specified
Type of review: Peer review (Abstract)
Language : English
Subjects : Anodes; Perovskite; Smart Material; SOFC
Subject (DDC) : 
Abstract: Fuel flexibility is a major advantage of SOFCs, which allows the use of hydrocarbon fuels. These fuels may contain trace amount of H2S, which causes a drop in performance with the conventional Ni-based anode catalysts. Thereby, it is highly desirable to develop novel sulfur tolerant anode materials. A new ceramic based on B-site substitution of titanium with nickel in lanthanum-doped strontium titanates catalyst, was investigated (La0.2Sr0.7Ti0.95Ni0.05O3-δ or LST27). The material shows promising tolerance towards sulfur poisoning and reductionoxidation (“redox”) cycling. Three samples - LST27, LST27 impregnated with 5 wt.% Ni, and LST 27 impregnated with 5 wt.% Ni and 10 wt.% CeO2 - were evaluated for their behavior with respect to redox cycle tolerance and poisoning with H2S. Results showed that the anode withstands redox cycles; subsequently, a redox cycle is exploited to recover anode performance after expos to H2S. In other words, this anode can be regenerated from sulfur poisoning and thereby extend SOFC lifetime.
Further description : B0929
Departement: School of Engineering
Organisational Unit: Institute of Materials and Process Engineering (IMPE)
Publication type: Conference Paper
URI: https://digitalcollection.zhaw.ch/handle/11475/8936
Published as part of the ZHAW project : SERAN - Self-Regenerating Anodes: Durability Improvement of SOFC Technology by Novel Smart Materials with Sulphur Tolerance
Appears in Collections:Publikationen School of Engineering

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