Accession Number : ADA513573


Title :   Development of Carbon and Sulphur Tolerant Anodes of Solid Oxide Fuel Cells


Descriptive Note : Final project rept. 3 Aug 2007-2 Aug 2009


Corporate Author : NANYANG TECHNOLOGICAL UNIV (SINGAPORE)


Personal Author(s) : Jiang, San P.


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA513573


Report Date : 14 JAN 2010


Pagination or Media Count : 49


Abstract : GDC-impregnated Ni/GDC anodes show the significant enhancement of the sulfur-tolerance of the anodes. However, the microstructure of GDC-impregnated Ni/GDC anodes still changes significantly in H2S-H2, indicating that GDC nanoparticles may not be able to completely inhibit the poisoning effect of sulfur on Ni/GDC anodes under present conditions studied. Co-impregnation of Pd-CeO2 was found to be most effective to enhance the activity of the Ni/GDC anodes for the hydrogen oxidation reaction in H2S-H2 and the polarization performance is stable under the condition of 100 ppm H2S-H2 and 200 mAcm-2 at 800oc for 50 hrs. Most important, the SEM results indicate that the impregnated Pd-CeO2 nanoparticles are effective to retard the poisoning effect of sulfur on the microstructure of Ni/GDC anodes, as compared the inhibiting effect of impregnation of Pd or GDC nanoparticles separately.


Descriptors :   *OXIDES , *ANODES , *FUEL CELLS , *SULFUR , HYDROGEN , OXIDATION , RESPONSE , TOLERANCE , POISONING , IMPREGNATION , SOLIDS , CARBON , SINGAPORE , POLARIZATION , MICROSTRUCTURE


Subject Categories : ELECTROCHEMICAL ENERGY STORAGE


Distribution Statement : APPROVED FOR PUBLIC RELEASE