The Polarization of Molten Carbonate Fuel Cell Electrodes: I . Analysis of Steady‐State Polarization Data

Yuh, Chao‐Yi; Selman, J. R.

doi:10.1149/1.2085473

Cited by 141 publications

(54 citation statements)

References 2 publications

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“…The observed overpotentials η decrease with increasing the temperature indicating a decrease of both the polarization and diffusion overpotentials (for the case of the cobalt coated NiO) with an increase of temperature. Similar results were observed in literature [56,57].…”

Section: Surface Modified Electrodes Cobalt Coated Nickel Cathodesupporting

confidence: 93%

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Optimization of the Cathode Long-Term Stability in Molten Carbonate Fuel Cells: Experimental Study and Mathematical Modeling

Colonmer¹,

Ganesan²,

Subramanian³

et al. 2002

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This project focused on addressing the two main problems associated with state of art Molten Carbonate Fuel Cells, namely loss of cathode active material and stainless steel current collector deterioration due to corrosion. We followed a dua l approach where in the first case we developed novel materials to replace the cathode and current collector currently used in molten carbonate fuel cells. In the second case we improved the performance of conventional cathode and current collectors through surface modification. States of art NiO cathode in MCFC undergo dissolution in the cathode melt thereby limiting the lifetime of the cell. To prevent this we deposited cobalt using an electroless deposition process. We also coated perovskite The corrosion of the current collector in the cathode side was also studied. The corrosion characteristics of both SS304 and SS304 coated with Co-Ni alloy were studied. This study confirms that surface modification of SS304 leads to the formation of complex scales with better barrier properties and better electronic conductivity at 650 o C.A three phase homogeneous model was developed to simulate the performance of the molten carbonate fuel cell cathode and the complete fuel cell. The homogeneous model is based on volume averaging of different variables in the three phases over a small volume element. This approach can be used to model porous electrodes as it represents the real system much better than the conventional agglomerate model. Using the homogeneous model the polarization characteristics of the MCFC cathode and fuel cell were studied under different operating conditions. Both the cathode and the full cell model give good fits to the experimental data.

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Section: Surface Modified Electrodes Cobalt Coated Nickel Cathodesupporting

confidence: 93%

“…The impedance response shown in Fig. 18 is similar in appearance to the ones obtained by Yuh et al [56,57] under similar conditions. As shown in Figure 18, the cell temperature has a marked effect on the ac impedance.…”

Section: Surface Modified Electrodes Cobalt Coated Nickel Cathodesupporting

confidence: 84%

Optimization of the Cathode Long-Term Stability in Molten Carbonate Fuel Cells: Experimental Study and Mathematical Modeling

Colonmer¹,

Ganesan²,

Subramanian³

et al. 2002

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show abstract

“…The impedance response shown in Fig. 8 is similar in appearance to the ones obtained by Yuh and Selman [11,12] under similar conditions. As shown in Fig.…”

Section: Electrochemical Impedance Spectroscopy (Eis) Studiessupporting

confidence: 82%

Performance of La0.8Sr0.2CoO3 coated NiO as cathodes for molten carbonate fuel cells

Ganesan

Colon

Haran

et al. 2003

Journal of Power Sources

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“…Yuh et al [43] obtained similar results for NiO in terms of O 2 and CO 2 dependence on impedance responses.…”

Section: Stability Tests: -mentioning

confidence: 58%

Optimization of the Cathode Long-Term Stability in Molten Carbonate Fuel Cells: Experimental Study and Mathematical Modeling

White¹,

Popov²

2001

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The dissolution of NiO cathodes during cell operation is a limiting factor to the successful commercialization of molten carbonate fuel cells (MCFCs). Lithium cobalt oxide coating onto the porous nickel electrode has been adopted to modify the conventional MCFC cathode which id believed to increase the stability of the cathodes in the carbonate melt. The material used for surface modification should possess thermodynamic stability in the molten carbonate and also should be electro catalytically active for MCFC reactions. Lithium Cobalt oxide was coated on Ni cathode by a sol-gel coating. The morphology and the LiCoO 2 formation of LiCoO 2 coated NiO was studied using scanning electron microscopy and X-Ray diffraction studies respectively.

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The Polarization of Molten Carbonate Fuel Cell Electrodes: I . Analysis of Steady‐State Polarization Data

Cited by 141 publications

References 2 publications

Optimization of the Cathode Long-Term Stability in Molten Carbonate Fuel Cells: Experimental Study and Mathematical Modeling

Optimization of the Cathode Long-Term Stability in Molten Carbonate Fuel Cells: Experimental Study and Mathematical Modeling

Performance of La0.8Sr0.2CoO3 coated NiO as cathodes for molten carbonate fuel cells

Optimization of the Cathode Long-Term Stability in Molten Carbonate Fuel Cells: Experimental Study and Mathematical Modeling

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