Performance of LiCoO2-coated NiO cathode under pressurized conditions

Jonghee Han, Seung Goo Kim, Sung Pil Yoon, Suk Woo Nam, Tae Hoon Lim, In Hwan Oh, Seong Ahn Hong, Hee Chun Lim

Research output: Contribution to journalConference article

14 Citations (Scopus)

Abstract

The properties of LiCoO2-coated NiO cathodes prepared by the solution impregnation technique were investigated. The electrode performance of the LiCoO2-coated cathodes were comparable with that of the conventional NiO cathode at 1, 3, and 5atm and the prepared cathodes showed no performance decay at least for the first 1000 h at pressurized conditions. The post-analysis revealed that the LiCoO2-coated cathodes were effective in suppressing NiO dissolution up to 51% at 1atm and 50% at 3atm. However, the suppression of the NiO dissolution was found to be much less effective (about 11% of suppression) at 5atm. The number of impregnations applied, in other words, the amount of LiCoO2 incorporated into the NiO cathode seemed to have no significant effect on suppressing the NiO dissolution. The Ni contents in the matrix after the 1000 h operations did not vary with increasing the LiCoO2 amount in the NiO cathodes from 0.25-0.8mol%. In the cell with the co-flow configuration, the highest Ni content in the matrix was found at the gas inlet side and the Ni content in the matrix decreased along the gas flow direction.

Original languageEnglish
Pages (from-to)153-159
Number of pages7
JournalJournal of Power Sources
Volume106
Issue number1-2
DOIs
Publication statusPublished - 2002 Apr 1
Event7th Grove Fuel Cell Symposium, Grove VII - London, United Kingdom
Duration: 2001 Sep 112001 Sep 13

Keywords

  • LiCoO-coated NiO cathodes
  • MCFC
  • Ni dissolution

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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  • Cite this

    Han, J., Kim, S. G., Yoon, S. P., Nam, S. W., Lim, T. H., Oh, I. H., Hong, S. A., & Lim, H. C. (2002). Performance of LiCoO2-coated NiO cathode under pressurized conditions. Journal of Power Sources, 106(1-2), 153-159. https://doi.org/10.1016/S0378-7753(01)01047-3