Co-planar single chamber solid oxide fuel cells with concentric electrodes

Daehee Lee, Joosun Kim, Joo Ho Moon

Research output: Contribution to journalLetter

1 Citation (Scopus)

Abstract

We propose a novel electrode design for co-planar single chamber solid oxide fuel cells. The concentric electrodes as well as the controlled gas flow in perpendicular to the center of the electrode enable continuous laminar flow from the cathode to the anode, which leads optimal residence time of the gas near electrodes and in turn allows high-performance stable operation. The steady state gas flow without turbulence determines not only the local thermodynamic equilibrium, but also the kinetics of the electrochemical reactions. The cell with the concentric electrodes shows the maximum open circuit voltage (OCV) of 0.70 V, and the maximum power density is improved by 154%. In contrast, the conventional cell with linear-shaped electrodes exhibits the maximum OCV of 0.55 V. Impedance spectroscopy reveals that the polarization resistance is reduced by altering the electrode design from the linear-shape to the concentric design.

Original languageEnglish
Pages (from-to)185-189
Number of pages5
JournalJournal of Asian Ceramic Societies
Volume2
Issue number3
DOIs
Publication statusPublished - 2014 Jan 1

Fingerprint

Solid oxide fuel cells (SOFC)
Electrodes
Open circuit voltage
Flow of gases
Laminar flow
Anodes
Cathodes
Turbulence
Gases
Spectroscopy
Thermodynamics
Polarization
Kinetics

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

Cite this

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title = "Co-planar single chamber solid oxide fuel cells with concentric electrodes",
abstract = "We propose a novel electrode design for co-planar single chamber solid oxide fuel cells. The concentric electrodes as well as the controlled gas flow in perpendicular to the center of the electrode enable continuous laminar flow from the cathode to the anode, which leads optimal residence time of the gas near electrodes and in turn allows high-performance stable operation. The steady state gas flow without turbulence determines not only the local thermodynamic equilibrium, but also the kinetics of the electrochemical reactions. The cell with the concentric electrodes shows the maximum open circuit voltage (OCV) of 0.70 V, and the maximum power density is improved by 154{\%}. In contrast, the conventional cell with linear-shaped electrodes exhibits the maximum OCV of 0.55 V. Impedance spectroscopy reveals that the polarization resistance is reduced by altering the electrode design from the linear-shape to the concentric design.",
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Co-planar single chamber solid oxide fuel cells with concentric electrodes. / Lee, Daehee; Kim, Joosun; Moon, Joo Ho.

In: Journal of Asian Ceramic Societies, Vol. 2, No. 3, 01.01.2014, p. 185-189.

Research output: Contribution to journalLetter

TY - JOUR

T1 - Co-planar single chamber solid oxide fuel cells with concentric electrodes

AU - Lee, Daehee

AU - Kim, Joosun

AU - Moon, Joo Ho

PY - 2014/1/1

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N2 - We propose a novel electrode design for co-planar single chamber solid oxide fuel cells. The concentric electrodes as well as the controlled gas flow in perpendicular to the center of the electrode enable continuous laminar flow from the cathode to the anode, which leads optimal residence time of the gas near electrodes and in turn allows high-performance stable operation. The steady state gas flow without turbulence determines not only the local thermodynamic equilibrium, but also the kinetics of the electrochemical reactions. The cell with the concentric electrodes shows the maximum open circuit voltage (OCV) of 0.70 V, and the maximum power density is improved by 154%. In contrast, the conventional cell with linear-shaped electrodes exhibits the maximum OCV of 0.55 V. Impedance spectroscopy reveals that the polarization resistance is reduced by altering the electrode design from the linear-shape to the concentric design.

AB - We propose a novel electrode design for co-planar single chamber solid oxide fuel cells. The concentric electrodes as well as the controlled gas flow in perpendicular to the center of the electrode enable continuous laminar flow from the cathode to the anode, which leads optimal residence time of the gas near electrodes and in turn allows high-performance stable operation. The steady state gas flow without turbulence determines not only the local thermodynamic equilibrium, but also the kinetics of the electrochemical reactions. The cell with the concentric electrodes shows the maximum open circuit voltage (OCV) of 0.70 V, and the maximum power density is improved by 154%. In contrast, the conventional cell with linear-shaped electrodes exhibits the maximum OCV of 0.55 V. Impedance spectroscopy reveals that the polarization resistance is reduced by altering the electrode design from the linear-shape to the concentric design.

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