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 language | English |
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Pages (from-to) | 153-159 |
Number of pages | 7 |
Journal | Journal of Power Sources |
Volume | 106 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 2002 Apr 1 |
Event | 7th Grove Fuel Cell Symposium, Grove VII - London, United Kingdom Duration: 2001 Sept 11 → 2001 Sept 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