Aggravated test of Intermediate temperature solid oxide fuel cells fed with tar-contaminated syngas
作者： Davide Pumiglia , Simone Vaccaro , Andrea Masi , Stephen J. McPhail , Mauro Falconieri
DOI: 10.1016/J.JPOWSOUR.2016.11.065
关键词:
摘要: Abstract In the present work, effects of a tar-containing simulated syngas on an IT-SOFC (Intermediate Temperature Solid Oxide Fuel Cell) are evaluated. Performance and degradation rate planar anode-supported cell, operating under obtained from steam-enriched air gasification biomass, have been studied. The was contaminated using toluene as model tar. Polarization curves electrochemical impedance spectroscopy carried out different concentrations. A cell then operated constant current density long run. EIS measurements were made during operation to analyze degradation, voltage evolution compared that another identical in clean for 1000 h similar conditions. deep post-mortem characterization performed by means XRD measurements, Raman SEM/EDS analysis. Results show presence tar dramatically reduces performances affecting both activation mass transport processes. Post-mortem analysis shows formation carbon deposits, oxidation Ni NiO, segregation ZrO 2 YSZ phase, particle coarsening enhanced fragility anode structure, good agreement with what suggested results.
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