High Temperature Material Processes (An International Quarterly of High-Technology Plasma Processes) An International Journal

ISSN for PRINT: 1093-3611

For Online Access

Best Paper Award Selection - Editorial Board Site

2007, Volume11

Issue 1

162 pages

DOI: 10.1615/HighTempMatProc.v11.i1

Issue price - $168.00

Syed Asif Ansar
German Aerospace Center (DLR), Pfaffenwaldring 38-40, 70569 Stuttgart, Germany

Zeynep Ilhan
German Aerospace Center (DLR), Pfaffenwaldring 38-40, 70569 Stuttgart, Germany

Waldemar Richter
German Aerospace Center (DLR), Pfaffenwaldring 38-40, 70569 Stuttgart, Germany

Nanostructured YSZ+Ni cermet anode functional layers for SOFC were developed by plasma spraying. Spray processing was optimized by controlling plasma enthalpy and velocity in order to obtain well distributed finely porous nanostructured deposits exhibiting high gas permeability, suitable high temperature electronic conductivity, enhanced triple phase boundaries and catalytic activity. The results were compared with conventional NiO+YSZ and Ni-C+YSZ anodes. YSZ electrolyte layer was deposited onto the anodes for electrochemical testing at 800°C in static conditions. Impedance spectroscopy measurements were performed to collect data on polarization resistance and catalytic behavior of anode layers. It was established that enlarged reaction zone, provided by high specific surface area of nanostructured anodes, and finely porous microstructure, led to lower activation and concentration polarizations and enhanced cell performance by more than 60% compared to conventional cells.

DOI: 10.1615/HighTempMatProc.v11.i1.70 Download article, 83-94 pages

Article price - $35.00

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