Ryu, BH Han, J Yoon, SP Nam, SW Lim, TH Hong, SA Kim, KB 2024-01-21T06:10:55Z 2024-01-21T06:10:55Z 2021-09-05 2004-10-05 0378-7753 https://pubs.kist.re.kr/handle/201004/137141 The dissolution behavior of the NiO-CoO electrodes in molten (Li0.62K0.38)(2)CO3 eutectics as a function of Co content was investigated under the standard cathodic gas composition at 650 degreesC. In order to prepare NiO-CoO electrodes, Co was deposited on the porous Ni electrode using galvanostatic pulse plating technique followed by the oxidation process. Compared to the pure NiO electrode, NiO-CoO electrodes showed low Ni solubility in molten (Li0.62K0.38)(2)CO3 eutectics. Solubility of NiO-CoO electrodes depended on the partial pressure of carbon dioxide (P-CO2) and the Ni solubility increased with P-CO2. On the other hand, the Ni solubility was not affected by the partial pressure of oxygen (P-O2). The XRD analysis after the dissolution experiment, showed that the Ni solubility decreased with increase of the amount of lithium incorporated in the electrodes and that the lithium incorporation was promoted by the formation of NiO-CoO solid solution. The results obtained in the present study suggested that NiO-CoO solid solution could effectively suppress the NiO dissolution in the molten (Li0.62K0.38)(2)CO3 eutectics. (C) 2004 Elsevier B.V. All rights reserved. English ELSEVIER CARBONATE FUEL-CELLS LIFEO2-LICOO2-NIO CATHODES NICKEL OXIDES COBALT PERFORMANCE LA0.8SR0.2COO3 IMPROVEMENT SOLUBILITY MORPHOLOGY STABILITY Dissolution behavior of Co-coated NiO cathode in molten (Li0.62K0.38)(2)CO3 eutectics Article 10.1016/j.jpowsour.2004.05.037 1 JOURNAL OF POWER SOURCES, v.137, no.1, pp.62 - 70 JOURNAL OF POWER SOURCES 137 1 62 70 scie scopus 000224235700008 2-s2.0-4544292639 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article CARBONATE FUEL-CELLS LIFEO2-LICOO2-NIO CATHODES NICKEL OXIDES COBALT PERFORMANCE LA0.8SR0.2COO3 IMPROVEMENT SOLUBILITY MORPHOLOGY STABILITY NiO dissolution galvanostatic pulse plating Co MCFC cathode