New method for low temperature fabrication of Ni-Al alloy powder for molten carbonate fuel cell applications

Seong Cheol Jang, Byung Yong Lee, SukWoo Nam, Hyung Chul Ham, Jonghee Han, Sung Pil Yoon, Seong Geun Oh

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Lump-free Ni-5 wt% Al alloy powder was successfully prepared using an AlCl3 activator at 400 °C under vacuum. The AlCl3 activator served as the catalyst, lowering the fabrication temperature by 1000°C compared with the temperature required for the conventional process. The Ni-Al alloy was formed by the following steps: the formation of NiAl by the reaction of the Ni surface with AlCl2 or AlCl produced by the reaction between Al and AlCl3, the formation of Ni3Al by Al diffusion and reaction, and the formation of a Ni-Al solid solution by Al diffusion into the Ni matrix until the solubility limitation was reached. Although lowering the alloying temperature lengthens the reaction time, the time could be reduced by controlling the amount of AlCl3. A single cell test and a creep test were also conducted using a green sheet of as-prepared Ni-Al alloy powder as an anode of a molten carbonate fuel cell (MCFC).

Original languageEnglish
Pages (from-to)12259-12265
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume39
Issue number23
DOIs
Publication statusPublished - 2014 Aug 4

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Fingerprint Dive into the research topics of 'New method for low temperature fabrication of Ni-Al alloy powder for molten carbonate fuel cell applications'. Together they form a unique fingerprint.

  • Cite this