Durable and High-Performance Direct-Methane Fuel Cells with Coke-Tolerant Ceria-Coated Ni Catalysts at Reduced Temperatures

Jin Goo Lee, Ok Sung Jeon, Ho Jung Hwang, Jeongseok Jang, Yeayeon Lee, Sang Hoon Hyun, Yong-Gun Shul

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Natural gas constitutes a promising energy source in the intermediate future because of the existing supply infrastructure and ease of storage and transportation. Although a solid oxide fuel cell can directly convert chemical energy stored in the hydrocarbon fuel into electrical energy at high temperatures, carbon formations on the nickel-based anode surfaces cause serious degradation of the long-term performance. Here, we report highly coke-tolerant ceria-coated Ni catalysts for low-temperature direct-methane fuel cells. The catalyst shows the high activity for CO oxidations, which is beneficial to avoid carbon formations induced by CO disproportionation at low temperatures. When the ceria-coated Ni catalysts were applied to the solid oxide fuel cells as a catalyst layer, the cell generates a power output of 1.42 W cm-2 at 610 °C in dry methane and operates over 1000 h at a current density of 1.2 A cm-2.

Original languageEnglish
Pages (from-to)677-686
Number of pages10
JournalElectrochimica Acta
Volume191
DOIs
Publication statusPublished - 2016 Feb 10

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Cerium compounds
Methane
Coke
Fuel cells
Catalysts
Carbon Monoxide
Solid oxide fuel cells (SOFC)
Carbon
Temperature
Hydrocarbons
Nickel
Natural gas
Anodes
Current density
Degradation
Oxidation

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Electrochemistry

Cite this

Lee, Jin Goo ; Jeon, Ok Sung ; Hwang, Ho Jung ; Jang, Jeongseok ; Lee, Yeayeon ; Hyun, Sang Hoon ; Shul, Yong-Gun. / Durable and High-Performance Direct-Methane Fuel Cells with Coke-Tolerant Ceria-Coated Ni Catalysts at Reduced Temperatures. In: Electrochimica Acta. 2016 ; Vol. 191. pp. 677-686.
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Durable and High-Performance Direct-Methane Fuel Cells with Coke-Tolerant Ceria-Coated Ni Catalysts at Reduced Temperatures. / Lee, Jin Goo; Jeon, Ok Sung; Hwang, Ho Jung; Jang, Jeongseok; Lee, Yeayeon; Hyun, Sang Hoon; Shul, Yong-Gun.

In: Electrochimica Acta, Vol. 191, 10.02.2016, p. 677-686.

Research output: Contribution to journalArticle

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