Browse > Article
http://dx.doi.org/10.5229/JKES.2010.13.1.034

Effect of Anode Thickness on the Overpotential in a Molten Carbonate Fuel Cell  

Lee, Choong-Gon (Department of Chemical Engineering, Hanbat National University)
Lee, Sung-Yoon (Department of Chemical Engineering, Hanbat National University)
Ryu, Bo-Hyun (R&D Institute, Doosan Heavy Industry)
Kim, Do-Hyung (Korea Electric Power Research Institute)
Lim, Hee-Chun (Korea Electric Power Research Institute)
Publication Information
Journal of the Korean Electrochemical Society / v.13, no.1, 2010 , pp. 34-39 More about this Journal
Abstract
This work investigated the effect of anode thickness on the anodic overpotential with $100\;cm^2$ class MCFC single cells. The hydrogen oxidation rate in the molten carbonate is sufficiently high, which may lead to weak relation of overpotential with anode geometrical area. The relation of anode surface area and overpotential was analysed in terms of anode thickness in this work. Steady state polarization, inert gas step addition (ISA), and reactant gas addition (RA) methods were employed to the two cells with 0.77 mm and 0.36 mm thickness of anode. The result represented that the anodic overpotential at the cells were identical. It implied that the anodic overpotential was independent on the electrode thickness within the tested range.
Keywords
Molten carbonate fuel cell; Anode thickness; Overpotential; Inert gas step addition; Reactant gas addition;
Citations & Related Records
연도 인용수 순위
  • Reference
1 C.-G. Lee, D.-H. Kim, and H.-C. Lim, ‘Electrode Reaction Characteristics under Pressurized Conditions in a Molten Carbonate Fuel Cell’ J. Electrochem. Soc., 154, B396 (2007).   DOI
2 C.-G. Lee, S.-Y. Lee, J.-Y. Hwang, M. Oh, D.-H. Kim, and H.-C. Lim, ‘Effect of Anode Area on the Cell Performance in a Molten Carbonate Fuel Cell’ J. Electrochem. Soc., 155, A138 (2008).   DOI
3 T. Nishina, I. Uchida, and J. R. Selman, ‘Gas Electrode Reaction in Molten Carbonate Media, V. Electrochemical Analysis of the Oxygen Reduction Mechanism at a Fully Immersed Gold Electrode’ J. Electrochem. Soc., 141, 1191 (1994).   DOI
4 P.G.P. Ang and A.F. Sammells, ‘Influence of Electrolyte Composition on Electrode Kinetics in the Molten Carbonate Fuel Cell' J. Electrochem. Soc., 127, 1287 (1980).   DOI
5 T. Nishina, M. Takahashi, and I. Uchida, ‘Gas Electrode Reactions in Molten Carbonate Media, IV. Electrode Kinetics and Mechanism of Hydrogen Oxidation in (Li+K)$CO_3$ Eutectic’ J. Electrochem. Soc., 137, 1112 (1990).   DOI
6 C.-G. Lee, B.-S. Kang, H.-K. Seo, and H.-C. Lim, ‘Effect of gas-phase transport in molten carbonate fuel cell’ J. Electroanal. Chem., 540, 169 (2003).   DOI
7 I. Uchida, T. Nishina, Y. Mugikura, and K. Itaya, ‘Gas Electrode Reactions in Molten Carbonate Media, I. Exchange Current Density of Oxygen Reduction in (Li+K)$CO_3$ Eutectic at $650{^{\circ}C}$’ J. Electroanal. Chem., 206, 229 (1986).   DOI
8 S.-H. Lu and J. R. Selman, ‘Electrode kinetics of oxygen reduction on gold in molten carbonate’ J. Electroanal. Chem., 333, 257 (1992).   DOI
9 K. Kinoshita, ‘Electrochemical oxygen technology‘, Electrochemical Society Series, Wiley-interscience publication, p.36 (1992).
10 C.-G. Lee, and H.-C. Lim, ‘Experimental Investigation of Electrode Reaction Characteristics with Reactant Gas Addition Measurement in a Molten Carbonate Fuel Cell’ J. Electrochem. Soc., 152, A219 (2005).   DOI
11 C. Y. Yuh and J. R. Selman, ‘Polarization of the Molten Carbonate Fuel Cell Anode and Cathode’ J. Electrochem. Soc., 131, 2062 (1984).   DOI
12 L. J. M. J. Blomen and M. N. Mugerwa, ‘Fuel Cell Systems’, Plenum Press, p.375 (1993).