A study on the electrochemical performance of 100-cm2 class direct carbon-molten carbonate fuel cell (DC-MCFC)

Sun Hee Choi, Dong Nyeok Park, Chang Won Yoon, Sung Pil Yoon, Suk Woo Nam, Seong Ahn Hong, Yong Gun Shul, Hyung Chul Ham, Jonghee Han

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We study the effect of various operating parameters such as temperature, molten carbonate/carbon ratio, and the type of Ni thin layer inserted between the matrix (electrolyte support) and carbon green sheet on the electrochemical performance of a 100-cm2 class direct carbon-molten carbonate fuel cell (DC-MCFC). In addition, we attempt to understand the oxidation behavior of carbon in the wet carbon anode (the composite of carbon and molten carbonates) of the DC-MCFC. We find that in the DC-MCFC, CO is produced via a two-electron transfer reaction [C(s) + CO3-2 → CO2(g) + CO(g) + 2e-] and is further oxidized with CO3-2 [CO(g) + CO3-2 → 2CO2(g) + 2e-] under closed circuit voltage conditions, indicating that CO is responsible for determining the DC-MCFC performance.

Original languageEnglish
Pages (from-to)5144-5149
Number of pages6
JournalInternational Journal of Hydrogen Energy
Volume40
Issue number15
DOIs
Publication statusPublished - 2015 Apr 27

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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