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http://dx.doi.org/10.3795/KSME-B.2014.38.8.677

A Study on Reactions of Carbon-Carbonate Mixture at Elevated Temperature: As an Anode Media of SO-DCFC  

Yu, Jun Ho (Korea Institute of Industrial Technology)
Kang, Kyungtae (Korea Institute of Industrial Technology)
Hwang, Jun Young (Korea Institute of Industrial Technology)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.38, no.8, 2014 , pp. 677-685 More about this Journal
Abstract
A direct carbon fuel cell (DCFC) generates electricity directly by converting the chemical energy in coal. In particular, a DCFC system with a solid oxide electrolyte and molten carbonate anode media has been proposed by SRI. In this system, however, there are conflicting effects of temperature, which enhances the ion conductivity of the solid electrolyte and reactivity at the electrodes while causing a stability problem for the anode media. In this study, the effect of temperature on the stability of a carbon-carbonate mixture was investigated experimentally. TGA analysis was conducted under either nitrogen or carbon dioxide ambient for $Li_2CO_3$, $K_2CO_3$, and their mixtures with carbon black. The composition of the exit gas was also monitored during temperature elevation. A simplified reaction model was suggested by considering the decomposition of carbonates and the catalyzed Boudouard reactions. The suggested model could well explain both the measured weight loss of the mixture and the gas formation from it.
Keywords
Direct Carbon Fuel Cell; Solid Oxide Electrolyte; Molten Carbonate Anode-Media; Chemical Reaction;
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1 Nagase, K., Shimodaira, T., Itoh, M. and Zheng, Y., 1999 "Kinetics and Mechanisms of the Reverse Boudouard Reaction over Metal Carbonates in Connection with the Reaction of Solid Carbon withmetal Carbonates," Phys Chem Chem Phys Vol. 1, pp. 5659-5664.   DOI   ScienceOn
2 Kapteijn, F., Peer, O. and Moulijn, J. A., 1986, "Kinetics of the Alkali Carbonate Catalysed Gasification of Carbon. 1. $CO_2$ Gasification," Fuel, Vol. 65, pp. 1371-1378.   DOI   ScienceOn
3 Mckee, D. W., 1982, "Gasification of Graphite in Carbon Dioxide and Water Vapor-the Catalytic Effects of Alkali Metal Salts," Carbon, Vol. 20, pp. 59-66.   DOI   ScienceOn
4 Cooper, J. F. and Selman, J. R., 2012, "Analysis of the Carbon Anode in Direct Carbon Conversion Fuel Cells," Int. J. of Hydrogen Energy, Vol. 37, pp. 19319-19328.   DOI   ScienceOn
5 Varlamov, Y. D., Predtechenskii M. P. and Ulyankin, S. N., 2012, "Interrelation of Anode and Cathode Processes in Electrochemical Carbon Oxidation in a Fuel Cell with Molten Carbonate Electrolyte," Journal of Engineering Thermophysics, Vol. 21, pp. 16-27.   DOI
6 Janz, G. J., Allen, C. B., Bansal, N. P.; Murphy, R.M. and Tomkins, R.P.T., 1979, "Physical Properties Data Compilations Relevant to Energy Storage. II. Molten Salts: Data on Single and Multi-component Salt Systems," Report NSRDS-NBS-61(PT.2).
7 Li, X., Zhu Z., Marco, D. R., Bradley, J. and Dicks, A., 2010, "Evaluation of Raw Coals as Fuels for Direct Carbon Fuel Cells," J Power Sources, Vol. 195 pp. 4051-4058.   DOI   ScienceOn
8 Deleebeeck, L. and Hansen, K. K., 2014, "Hybrid Direct Carbon Fuel Cells and their Reaction Mechanisms-a Review," J Solid State Electrochem, Vol. 18, pp. 861-882.   DOI   ScienceOn
9 Li, H., Liu, Q. and Li, Y., 2010, "A Carbon in Molten Carbonate Anode Model for a Direct Carbon Fuel Cell," Electrochimica Acta, Vol. 55, pp. 1958-1965.   DOI   ScienceOn
10 Jia, L., Tian, Y., Liu, Q., Xia, C., Yu, J., Wang, Z., Zhao, Y. and Li, Y., 2010, "A Direct Carbon Fuel Cell with (Molten Carbonate)/(doped Ceria) Composite Electrolyte," Journal of Power Sources, Vol. 195, pp. 5581-5586.   DOI   ScienceOn
11 Chien, A. C. and Chuang, S. S. C., 2011, "Effect of Gas Flow Rates and Boudouard Reactions on the Performance of Ni/YSZ Anode Supported Solid Oxide Fuel Cells with Solid Carbon Fuels," J Power Sources Vol. 196, pp. 4719-4723.   DOI   ScienceOn
12 Nabae, Y., Pointon, K. D. and Irvine, J. T. S., 2008, "Electrochemical Oxidation of Solid Carbon in Hybrid DCFC with Solid Oxide and Molten Carbonate Binary Electrolyte," Energy Environ Sci, Vol. 1, pp 148-155.   DOI   ScienceOn
13 Wolk, R. H., Lux, S., Gelber, S. and Holcomb, R. H., 2007, "Direct Carbon Fuel Cells: Converting Waste to Electricity," Report ERDC/CERL TR-07-32, p. 54.
14 Yun, U.-J., Jo, M.-J., Lee, J.-W., Lee, S.-B., Lim, T-H., Park, S.-J. and Song, R.-H., 2013, "Operating Characteristics of a Tubular Direct Carbon Fuel Cell Based on a General Anode Support Solid Oxide Fuel Cell," Ind. Eng. Chem. Res., Vol. 52 (44), pp 15466-15471.   DOI   ScienceOn
15 Edison, T. A., 1891, US Patent No. 460,122.
16 Jacques, W. W., 1896, US Patent No. 555,511.
17 Cao, D., Sun, Y. and Wang, G.., 2007, "Direct Carbon Fuel Cell: Fundamentals and Recent Developments," J. of Power Source, Vol 167, pp. 250-257.   DOI   ScienceOn
18 Giddey, S., Badwal, S. P. S., Kulkarni, A. and Munnings, C., 2012, "A Comprehensive Review of Direct Carbon Fuel Cell Technology," Progress in Energy and Combustion Science, Vol. 38, pp. 360-399.   DOI   ScienceOn
19 Balachov, I. I., Dubois, L. H., Hornbostel, M. D. and Lipilin, A. S., 2005, Presented in Fuel Cell Seminar, Direct Carbon Fuel Cell Workshop, Palm Springs, CA, USA, , Proceedings online:http://www.fuelcellseminar.com/pdf/Direct_Carbon_Fuel_Cell_Workshop/Balachov_Iouri.pdf.
20 Pointon, K., Lakeman, B., Irvine, J., Bradley, J. and Jain, S., 2006, "The Development of a Carbon-air Semi Fuel Cell," Journal of Power Sources, Vol. 162, pp. 750-756.   DOI   ScienceOn
21 McPhee, W. A. G.., Boucher, M., Stuart, J., Parnas, R. S., Koslowske, M., Tao, T. and Wilhite, B. A., 2009, "Demonstration of a Liquid-tin Anode Solid-oxide Fuel Cell (LTA-SOFC) Operating from Biodiesel Fuel," Energy & Fuels, Vol. 23, pp. 5036-5041.   DOI
22 Yentekakis, I. V., Debenedetti, P. G. and Costa, B., 1989, "A Novel Fused Metal Anode Solid Electrolyte Fuel-cell for Direct Coal-gasification-a Steady-state Model," Industrial & Engineering Chemistry Research, Vol 28, pp. 1414-1424.   DOI   ScienceOn
23 Jayakumar, A., Vohs, J. M. and Gorte, R. J., 2010, "Molten-metal Electrodes for Solid Oxide Fuel Cells," Industrial & Engineering Chemistry Research, Vol. 49, pp. 10237-10241.   DOI   ScienceOn
24 Rady, A. C., Giddey, S., Badwal, S. P. S., Ladewig, B. P. and Bhattacharya, S., 2012, "Review of Fuels for Direct Carbon Fuel Cells," Energy & Fuels, Vol. 26, pp. 1471-1488.   DOI   ScienceOn