ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Effects of various additives to Ni anode on SOFC using La0.9Sr0.1Ga0.8Mg0.2O3 basedoxide were investigated in this study. Among the examined additives, it was found that theaddition of small amount of Fe is highly effective for increasing the anodic activity. When 5 wt%Fe was added to Ni anode, the anodic overpotential was as small as 34 mV at 873 K, 0.1A/cm2,which is almost half of pure Ni anode. Since the estimated activation energy for anodic reactiondecreased, addition of Fe to Ni seems to be effective for increasing the activity of Ni for anodicreaction. XRD measurement after power generating property suggests that added Fe was formedalloy with Ni. SEM observation shows the high dispersion of Ni metal was sustained by addition ofsmall amount of Fe. Consequently, this study reveals that Ni-Fe bimetal is highly active foranodic reaction of SOFCs at decreased temperature
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.1350.pdf
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