A new cathode for reduced-temperature molten carbonate fuel cells

Hoang Viet Phuc Nguyen; Min Goo Kang; Hyung Chul Ham; Sun Hee Choi; Jonghee Han; Suk Woo Nam; Seong Ahn Hong; Sung Pil Yoon

doi:10.1149/2.0741414jes

A new cathode for reduced-temperature molten carbonate fuel cells

Hoang Viet Phuc Nguyen, Min Goo Kang, Hyung Chul Ham, Sun Hee Choi, Jonghee Han, Suk Woo Nam, Seong Ahn Hong, Sung Pil Yoon

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

Oxygen solubility is the rate-determining step (RDS) for the reduction reaction on the cathodes of molten carbonate fuel cells (MCFCs), especially at low operating temperatures below 600°C. The poor wetting property of the mixed ionic and electronic conductor (MIEC) coating, such as BYS (Bi_1.5Y_0.3Sm_0.2O_3-δ) on the NiO cathode, to the liquid electrolyte creates openings where oxygen absorption and dissociation take place to providemore oxide ionic species to electrochemical reaction sites (ERSs). Therefore, poor wetting MIEC-coated cells showed a much higher power density compared to standard cells, with a factor of 1.4 at the low operating temperature of 550°C. Long-term operation of 2500 hours with a low voltage loss of 9 mV suggests that BYS is a promising alternative cathode material for molten carbonate fuel cells.

Original language	English
Pages (from-to)	F1458-F1467
Journal	Journal of the Electrochemical Society
Volume	161
Issue number	14
DOIs	https://doi.org/10.1149/2.0741414jes
Publication status	Published - 2014

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1149/2.0741414jes

Cite this

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title = "A new cathode for reduced-temperature molten carbonate fuel cells",

abstract = "Oxygen solubility is the rate-determining step (RDS) for the reduction reaction on the cathodes of molten carbonate fuel cells (MCFCs), especially at low operating temperatures below 600°C. The poor wetting property of the mixed ionic and electronic conductor (MIEC) coating, such as BYS (Bi1.5Y0.3Sm0.2O3-δ) on the NiO cathode, to the liquid electrolyte creates openings where oxygen absorption and dissociation take place to providemore oxide ionic species to electrochemical reaction sites (ERSs). Therefore, poor wetting MIEC-coated cells showed a much higher power density compared to standard cells, with a factor of 1.4 at the low operating temperature of 550°C. Long-term operation of 2500 hours with a low voltage loss of 9 mV suggests that BYS is a promising alternative cathode material for molten carbonate fuel cells.",

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T1 - A new cathode for reduced-temperature molten carbonate fuel cells

AU - Nguyen, Hoang Viet Phuc

AU - Kang, Min Goo

AU - Ham, Hyung Chul

AU - Choi, Sun Hee

AU - Han, Jonghee

AU - Nam, Suk Woo

AU - Hong, Seong Ahn

AU - Yoon, Sung Pil

PY - 2014

Y1 - 2014

N2 - Oxygen solubility is the rate-determining step (RDS) for the reduction reaction on the cathodes of molten carbonate fuel cells (MCFCs), especially at low operating temperatures below 600°C. The poor wetting property of the mixed ionic and electronic conductor (MIEC) coating, such as BYS (Bi1.5Y0.3Sm0.2O3-δ) on the NiO cathode, to the liquid electrolyte creates openings where oxygen absorption and dissociation take place to providemore oxide ionic species to electrochemical reaction sites (ERSs). Therefore, poor wetting MIEC-coated cells showed a much higher power density compared to standard cells, with a factor of 1.4 at the low operating temperature of 550°C. Long-term operation of 2500 hours with a low voltage loss of 9 mV suggests that BYS is a promising alternative cathode material for molten carbonate fuel cells.

AB - Oxygen solubility is the rate-determining step (RDS) for the reduction reaction on the cathodes of molten carbonate fuel cells (MCFCs), especially at low operating temperatures below 600°C. The poor wetting property of the mixed ionic and electronic conductor (MIEC) coating, such as BYS (Bi1.5Y0.3Sm0.2O3-δ) on the NiO cathode, to the liquid electrolyte creates openings where oxygen absorption and dissociation take place to providemore oxide ionic species to electrochemical reaction sites (ERSs). Therefore, poor wetting MIEC-coated cells showed a much higher power density compared to standard cells, with a factor of 1.4 at the low operating temperature of 550°C. Long-term operation of 2500 hours with a low voltage loss of 9 mV suggests that BYS is a promising alternative cathode material for molten carbonate fuel cells.

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A new cathode for reduced-temperature molten carbonate fuel cells

Abstract

ASJC Scopus subject areas

UN SDGs

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