A performance study of hybrid direct carbon fuel cells: Impact of anode microstructure

Ji Yong Lee, Rak Hyun Song, Seung Bok Lee, Tak Hyoung Lim, Seok Joo Park, Yong Gun Shul, Jong Won Lee

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Direct carbon fuel cells (DCFCs) have recently attracted great interest because they could provide a considerably more efficient means of power generation in comparison with conventional coal-fired power plants. Among various types of DCFCs under development, a hybrid system offers the combined advantages of solid oxide and molten carbonate electrolytes; however, there is a significant technical challenge in terms of power capability. Here, we report an experimental study demonstrating how anode microstructure influences the power-generating characteristics of hybrid DCFCs. The anode microstructure (pore volume and surface area) is modified by using poly(methyl methacrylate) (PMMA) pore-formers. Polarization studies indicate that cell performance is strongly dependent on the anode surface area rather than on the pore volume. The incorporation of PMMA-derived pores into the anode leads to improved power capability at typical operating temperatures, which is attributed to an enlarged active zone for electrochemical CO oxidation.

Original languageEnglish
Pages (from-to)11749-11755
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume39
Issue number22
DOIs
Publication statusPublished - 2014 Jul 24

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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