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Research Papers

The Institute of Power Engineering Activity in the Solid Oxide Fuel Cell Technology

[+] Author and Article Information
Tomasz Golec

 Institute of Power Engineering, Department of Thermal Processes, Augustówka Street 36, 02-981 Warszawa, Polandtomasz.golec@ien.pl

Rui Antunes, Janusz Jewulski, Marcin Błesznowski

 Institute of Power Engineering, Department of Thermal Processes, Augustówka Street 36, 02-981 Warszawa, Poland

Mirosław Miller

 Institute of Power Engineering, Department of Thermal Processes, Augustówka Street 36, 02-981 Warszawa, Poland; Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

Ryszard Kluczowski, Mariusz Krauz, Kazimierz Krząstek

 Institute of Power Engineering, Department of Ceramic CEREL, Techniczna Street 1, 36-040 Boguchwała, Poland

J. Fuel Cell Sci. Technol 7(1), 011003 (Oct 06, 2009) (5 pages) doi:10.1115/1.3115638 History: Received June 18, 2007; Revised September 08, 2008; Published October 06, 2009

Electrolyte supported cells (ESC) were manufactured using tape casting and screen printing technology and the corresponding anode supported cells (ASC) manufacturing is currently under development. In the present study, “symmetrical” cathode-electrolyte-cathode solid oxide fuel cell (SOFC) single cells were also fabricated and tested using electrochemical impedance spectroscopy and scanning electron microscopy. The functional and contact layer properties were characterized by means of microscopic and electrochemical methods. Influence of thickness and grain size of layers on the cell performance was systematically investigated. the design of cell, stack and system was helped by computational fluid dynamics and system modeling. The gas flow distribution in the SOFC stack was systematically investigated. The ESC-SOFC cells developed at the Institute of Power Engineering achieved good performance as a result of improvements in ceramic processing. The present activities concentrate on ASC-SOFC cell development, cell testing and cell/stack/system design.

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Figures

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Figure 1

Structure of layers of ESC SOFC. (E) solid electrolyte, (A-1) interfacial anode layer, (A-2) functional anode layer, (A-3) contact anode layer, (C-1) functional cathode layer, and (C-2) contact cathode layer.

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Figure 2

The scheme of the SOFC single cell production

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Figure 3

Scanning electron micrographs of interfaces of symmetrical cell cathode-electrolyte-cathode manufactured at the IEn/CEREL (left) cross section of the interface LSM/LSM-YSZ/YSZ, and (right) cross section of the interface LSM/LSM-YSZ

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Figure 4

“Noise correction” by using an empirical noise model: spectrum without correction (left) and spectrum with noise correction using an empirical noise model (right) for the symmetrical cathode cell

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Figure 5

Charge transfer and bulk Ohmic resistance referred to IEn’s experimental set up (16 cm2 cell area, symmetrical cell)

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Figure 6

SOFC module system concept

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Figure 7

Flow misdistribution in the cells of the stack with internal U-flow manifolding type as a function of manifold width (50 cells stack and 0.004 m cell package height)

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Figure 8

Static pressure distribution in the SOFC stack manifolds and cells for the case of U-flow (left) and Z-flow (right) gas manifolds (0.01 m wide inlet/outlet manifolds, 50 cells stack, 0.004 m cell package height, and 18% oxidant utilization)

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Figure 9

Static pressure drop in the interconnect flow channels, calculated with Eq. 1 and compared with Fluent CFD calculations

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