Conversion of tars on solid oxide fuel cell anodes and its impact on voltages and current densities
作者： Tobias Herrmann , Marius Dillig , Martin Hauth , Jürgen Karl
DOI: 10.1002/ESE3.166
关键词: Inorganic chemistry 、 Arrhenius equation 、 Nickel 、 Anode 、 Open-circuit voltage 、 Tar 、 Materials science 、 Reaction rate constant 、 Solid oxide fuel cell 、 Naphthalene 、 Chemical engineering
摘要: This paper focuses on tar conversion solid oxide fuel cell (SOFC) anodes and its consequences for operation performance degradation issues. Based an extensive literature review it discusses the chemical behavior of species in typical gas environments/operation conditions at Nickel anode describes experimental investigation methodology. A numerical 1-D discretized model is developed that represents global kinetics SOFC based Arrhenius power law approach. permits determination apparent kinetic rate constants simple OCV measurements cells operated tar-laden gases. The approach applied verified with measurement data from literature. Resulting varied investigated (naphthalene, toluene) temperature (800–900°C) range 0.1–1.04 mol/sec/m2/bar. results showed good consistency within varying concentration levels FID off anodes.
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