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Enhanced performance of an anode-supported YSZ thin electrolyte fuel cell with a laser-deposited Sm0.2Ce0.8O1.9 interlayer

Journal Article · · Electrochemistry Communications
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A power density of over 1.4 W.cm-2 at 0.7 V was achieved at 750°C for an anode-supported YSZ thin electrolyte fuel cell with a dense Sm0.2Ce0.8O1.9 (SDC) interlayer fabricated by pulsed laser deposition, while the cell with a conventional porous SDC interlayer exhibited only 0.8 W.cm-2 at this voltage. The dense SDC interlayer significantly reduced the ohmic resistance of the fuel cell. For example, at 750°C, the ohmic resistance of the cell with a dense SDC interlayer was 0.08 Ωcm2; while that of the cell with a porous SDC interlayer fabricated by conventional screen-printing was 0.16 Ωcm2. The pronounced reduction in ohmic resistance might be due to the fully dense structure and thus improved electrical conductivity of the SDC interlayer, good contact at the interface between the SDC interlayer and the YSZ electrolyte, and suppressed Zr diffusion into the SDC interlayer.
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
OSTI ID:
978946
Report Number(s):
PNNL-SA-69732; AA2530000
Journal Information:
Electrochemistry Communications, Journal Name: Electrochemistry Communications Journal Issue: 2 Vol. 12; ISSN 1388-2481
Publisher:
Elsevier
Country of Publication:
United States
Language:
English

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Related Subjects

30 DIRECT ENERGY CONVERSION
DEPOSITION
DIFFUSION
ELECTRIC CONDUCTIVITY
ELECTROLYTES
FUEL CELLS
LASERS
PERFORMANCE
POWER DENSITY
SCREEN PRINTING
fuel cells
cathode