Thermo-electrochemical cells with inexpensive molten carbonate electrolyte and(CO2|O2) gas electrodes allow the possible conversion of high temperature waste heat from industrial processes into electricity.The cell co...Thermo-electrochemical cells with inexpensive molten carbonate electrolyte and(CO2|O2) gas electrodes allow the possible conversion of high temperature waste heat from industrial processes into electricity.The cell containing eutectic(Li,Na)2CO3 electrolyte with solid Mg O dispersion delivers a large Seebeck coefficient of-1.7 m V/K. At present, the(CO2|O2) gas electrodes use metallic gold as current collectors in order to avoid the formation of interfering oxide layers during operation. For further reduction in energy generation cost, the gold current collectors should be replaced with an inexpensive and stable alternative.In this study, the suitability of the(molten carbonate fuel cell) MCFC’s nickel-based cathodes to operate the molten-carbonate thermo-electrochemical cell, was investigated. Ni current collectors were examined in two different states, as Ni O and as lithiated Ni O(LixNi1-xO). The Ni O phase shows higher stability than the LixNi1-xO while the Seebeck coefficient remains above-1.2 m V/K.展开更多
基金the Research Council of Norway for financial support of the research project“Sustainable and Energy Efficient Electrochemical Production and Refining of Metals(SUPREME)”project no.228296 under the ENERGIX programthe Research Council of Norway for its Center of Excellence Funding scheme for Porelab,project no.262644。
文摘Thermo-electrochemical cells with inexpensive molten carbonate electrolyte and(CO2|O2) gas electrodes allow the possible conversion of high temperature waste heat from industrial processes into electricity.The cell containing eutectic(Li,Na)2CO3 electrolyte with solid Mg O dispersion delivers a large Seebeck coefficient of-1.7 m V/K. At present, the(CO2|O2) gas electrodes use metallic gold as current collectors in order to avoid the formation of interfering oxide layers during operation. For further reduction in energy generation cost, the gold current collectors should be replaced with an inexpensive and stable alternative.In this study, the suitability of the(molten carbonate fuel cell) MCFC’s nickel-based cathodes to operate the molten-carbonate thermo-electrochemical cell, was investigated. Ni current collectors were examined in two different states, as Ni O and as lithiated Ni O(LixNi1-xO). The Ni O phase shows higher stability than the LixNi1-xO while the Seebeck coefficient remains above-1.2 m V/K.
