caa a22 4500 475815238 CHVBK 20180406123808.0 cr unu---uuuuu 170329e20001201xx s 000 0 eng 10.1023/A:1026586915244 doi (NATIONALLICENCE)springer-10.1023/A:1026586915244 Electrochemical oxidation of carbon in a 62/38 mol % Li/K carbonate melt [Elektronische Daten] [W.H.A. Peelen, M. Olivry, S.F. Au, J.D. Fehribach, K. Hemmes] The electrochemical gasification of coal to CO in a direct carbon fuel cell (DCFC) has thermodynamical advantages, including the conversion of heat into power at a reversible efficiency of 100%. Molten carbonate fuel cell (MCFC) technology may form the basis for constructing DCFC's. Here the electrochemical oxidation of carbon in a 62/38 mol % Li/K carbonate melt is studied using impedance spectroscopy (IS) and cyclic voltammetry (CV). A set of equilibria is introduced which fully describes the electrochemical equilibrium of the system. From IS it is shown that for temperatures lower than 700 °C, charge transfer is the slowest step, while at higher temperatures a second unidentified step also contributes significantly to the d.c. resistance of the electrode. The d.c. resistance is 100 to 220 Ω cm2 at 650 °C and 12 to 60 Ω cm2 at 750 °C, depending on the carbon surface roughness. Kluwer Academic Publishers, 2000 carbon nationallicence coal nationallicence electrochemical oxidation nationallicence fuel cells nationallicence Peelen W.H.A. Faculty of Applied Sciences, Laboratory for Material Science, Delft University of Technology, Rotterdamseweg 137, 2628, AL Delft, The Netherlands aut Olivry M. Faculty of Applied Sciences, Laboratory for Material Science, Delft University of Technology, Rotterdamseweg 137, 2628, AL Delft, The Netherlands aut Au S.F. Faculty of Applied Sciences, Laboratory for Material Science, Delft University of Technology, Rotterdamseweg 137, 2628, AL Delft, The Netherlands aut Fehribach J.D. Faculty of Applied Sciences, Laboratory for Material Science, Delft University of Technology, Rotterdamseweg 137, 2628, AL Delft, The Netherlands aut Hemmes K. Faculty of Applied Sciences, Laboratory for Material Science, Delft University of Technology, Rotterdamseweg 137, 2628, AL Delft, The Netherlands aut Journal of Applied Electrochemistry Kluwer Academic Publishers 30/12(2000-12-01), 1389-1395 0021-891X 30:12<1389 2000 30 10800 https://doi.org/10.1023/A:1026586915244 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1026586915244 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Peelen W.H.A. Faculty of Applied Sciences, Laboratory for Material Science, Delft University of Technology, Rotterdamseweg 137, 2628, AL Delft, The Netherlands aut NATIONALLICENCE 700 1- Olivry M. Faculty of Applied Sciences, Laboratory for Material Science, Delft University of Technology, Rotterdamseweg 137, 2628, AL Delft, The Netherlands aut NATIONALLICENCE 700 1- Au S.F. Faculty of Applied Sciences, Laboratory for Material Science, Delft University of Technology, Rotterdamseweg 137, 2628, AL Delft, The Netherlands aut NATIONALLICENCE 700 1- Fehribach J.D. Faculty of Applied Sciences, Laboratory for Material Science, Delft University of Technology, Rotterdamseweg 137, 2628, AL Delft, The Netherlands aut NATIONALLICENCE 700 1- Hemmes K. Faculty of Applied Sciences, Laboratory for Material Science, Delft University of Technology, Rotterdamseweg 137, 2628, AL Delft, The Netherlands aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 30/12(2000-12-01), 1389-1395 0021-891X 30:12<1389 2000 30 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer