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

17 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

Bibliographical note

Publisher Copyright:
© The Author(s) 2014.

UN SDGs

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

SDG 7 Affordable and Clean Energy

ASJC Scopus subject areas

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

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10.1149/2.0741414jes

Cite this

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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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DO - 10.1149/2.0741414jes

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A new cathode for reduced-temperature molten carbonate fuel cells

Abstract

Bibliographical note

UN SDGs

ASJC Scopus subject areas

Access to Document

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