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The investigation of cathode layer of Molten Carbonate Fuel Cell manufactured by using printing techniques

Milewski Jarosław, Sieńko Arkadiusz, Wejrzanowski Tomasz, Jaworski Armen, Szabłowski Łukasz, Ćwieka Karol, Olszewski Artur, Szczęśniak Arkadiusz, Skibiński J., Dybiński Olaf

Journal of Power Technologies

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2019

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Vol. 99, nr 2

82--91

EN

The paper presents an investigation into the three cathode layers for the Molten Carbonate Fuel Cell that were obtained by using printing techniques on various surfaces. The main differences during the manufacturing process were the substrates used when printing the layers: glass and two different sorts of paper. The cathodes were investigated at the theoretical and experimental level. To identify the influence of the substrate used we built a mathematical model of the fuel cell, in which the influence is expressed by the conductivity of the layer. The paper demonstrates the possibility of using printing techniques to manufacture Molten Carbonate Fuel Cell layers.

2

Solid Oxide Electrolysis Cell co-methanation supported by Molten Carbonate Fuel Cell - a concept

Milewski J.

Journal of Power Technologies

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2016

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Vol. 96, nr 1

8--14

EN

The paper presents a concept of coupling a Solid Oxide Electrolysis Cell with a Molten Carbonate Fuel Cell for co–electrolysis of H2O with CO2 for generating synthetic fuel (methane based) for an electricity storage application on a larger scale. The concept is focused on coal/natural gas fired power plants for upgrade as peak energy storage. MCFC anode and SOEC cathode are exposed to the same flow, SOEC produces hydrogen for MCFC and MCFC delivers CO2 for methanation processes. Both electrodes have compatible polarity, thus they can be directly connected by the current collector and there is no need to apply bipolar plates. On the other side, SOEC will release oxygen to the flue gases and MCFC will capture oxygen and carbon monoxide, thus at the outlet will be a flow with increased oxygen content and decreased carbon dioxide concentration. The concept requires detailed electrochemical, chemical, and thermal simulations.

3

Design of open-porous materials for high-temperature fuel cells

Wejrzanowski T., Ibrahim H., Cwieka K., Milewski J., Kurzydlowski K. J.

Journal of Power Technologies

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2016

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Vol. 96, nr 3

178--182

EN

Microstructure is one of the major factors influencing material properties. It is especially important for open-porous materials dedicated to catalytic applications, where fraction of pores, their size distribution and specific surface influence the diffusion of reactants and the kinetics of catalytic reactions. In these studies the numerical models of the microstructure of open-porous electrodes for molten carbonate fuel cell (MCFC) are presented. The models presented here simulate fabrication routes for real materials, including mixing of powders, tape casting and sintering processes. The substrate powders are represented by spheres with defined size distribution. Mixing and compaction of powders with polymeric binder is simulated by a granular model implemented in LAMMPS code. In the next step the polymeric phase represented by fine particles and larger porogen addition is removed to form pores. The sintering process is simulated by geometry smoothing, which results in sphere aggregation. The models presented here were compared with micro computed tomography (µCT) 3D images of real MCFC materials. Quantitative analysis of µCT images was performed and it was demonstrated that algorithms used in these studies make it possible to design materials with the desired porous microstructure.

4

Diary biogas as fuel for a Molten Carbonate Fuel Cell – initial study

Milewski J., Michalska K., Kacprzak A.

Journal of Power Technologies

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2013

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Vol. 93, nr 3

161--168

EN

Based on 0-D mathematical modeling and numerical simulations, influences of diary biogas on Molten Carbonate Fuel Cell (MCFC) performance are presented. The governing equations of the MCFC model are presented, the equations were utilized for an adequate simulator construction. An analysis of diary biogas as fuels for MCFC is presented. The results are compared with Natural Gas (NG) as a reference fuel. The diary biogas is characterized by both lower efficiency and lower fuel utilization factors in comparison with NG.

5

Biofuels as fuels for high temperature fuel cells

Milewski J., Lewandowski J.

Journal of Power Technologies

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2013

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Vol. 93, nr 5

347--353

EN

Based on mathematical modeling and numerical simulations, influences of various biofuels on high temperature fuel cell performance are presented. Governing equations of high temperature fuel cell modeling are given. Adequate simulators of both SOFC and MCFC have been done and described. Performances of these fuel cells with dierent biofuels are shown. Some characteristics are given and described. Advantages and disadvantages of various biofuels from system performance point of view are pointed out. An analysis of various biofuels as fuels for Solid Oxide Fuel Cell (SOFC) and Molten Carbonate Fuel Cell (MCFC) is presented. The results are compared with Natural Gas (NG) as a reference fuel. The biofuels are characterized by both lower eciency and lower fuel utilization factors in comparison with NG. The presented results are based on a 0D mathematical model in design point calculation. The governing equations of the model are presented.