Pack aluminization of nickel anode for molten carbonate fuel cells

H. S. Chun, G. P. Park, J. H. Lim, Keon Kim, J. K. Lee, K. H. Moon, J. H. Youn

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The aluminium pack cementation (pack aluminization) process on a porous nickel anode for molten carbonate fuel cells has been studied to improve anode creep resistance. The porous nickel substrates used in this study were fabricated by doctor blade equipment followed by sintering (850 °C). Packs surrounding the Ni anode were made by mixing Al2O3 powder, Al powder, and NaCl as activator. The pack aluminization was performed at 700 to 850 °C for 0.5-5.0 h. After pack aluminization, the principal NiAl intermetallic compounds detected were Ni3Al at 700 °C, NiAl at 750 °C and Ni3Al2 at 800 °C. The aluminum content in the aluminized Ni anode was proportional to the square root of pack aluminizing time. With increasing the Al content in the anode, the creep of the anode decreased. It was nearly constant (2.0%) when the Al content was above 5.0%. Although the exchange current density (24 mA/cm2) for the aluminized (2.5 wt.%) Ni anode was somewhat lower than that of the pure Ni anode (40 mA/cm2), the performance of a single cell using an aluminized Ni anode was similar to that of the one with pure Ni anode.

Original languageEnglish
Pages (from-to)245-255
Number of pages11
JournalJournal of Power Sources
Volume49
Issue number1-3
Publication statusPublished - 1994 Apr 1

Fingerprint

molten carbonate fuel cells
Molten carbonate fuel cells (MCFC)
Nickel
Anodes
anodes
nickel
Aluminum
Powders
aluminum coatings
aluminum
cementation
creep strength
Creep resistance
blades
Intermetallics
intermetallics
sintering
Creep
Current density
Sintering

ASJC Scopus subject areas

  • Materials Chemistry
  • Fuel Technology
  • Electrochemistry

Cite this

Chun, H. S., Park, G. P., Lim, J. H., Kim, K., Lee, J. K., Moon, K. H., & Youn, J. H. (1994). Pack aluminization of nickel anode for molten carbonate fuel cells. Journal of Power Sources, 49(1-3), 245-255.

Pack aluminization of nickel anode for molten carbonate fuel cells. / Chun, H. S.; Park, G. P.; Lim, J. H.; Kim, Keon; Lee, J. K.; Moon, K. H.; Youn, J. H.

In: Journal of Power Sources, Vol. 49, No. 1-3, 01.04.1994, p. 245-255.

Research output: Contribution to journalArticle

Chun, HS, Park, GP, Lim, JH, Kim, K, Lee, JK, Moon, KH & Youn, JH 1994, 'Pack aluminization of nickel anode for molten carbonate fuel cells', Journal of Power Sources, vol. 49, no. 1-3, pp. 245-255.
Chun HS, Park GP, Lim JH, Kim K, Lee JK, Moon KH et al. Pack aluminization of nickel anode for molten carbonate fuel cells. Journal of Power Sources. 1994 Apr 1;49(1-3):245-255.
Chun, H. S. ; Park, G. P. ; Lim, J. H. ; Kim, Keon ; Lee, J. K. ; Moon, K. H. ; Youn, J. H. / Pack aluminization of nickel anode for molten carbonate fuel cells. In: Journal of Power Sources. 1994 ; Vol. 49, No. 1-3. pp. 245-255.
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