Comparative study of three different catalyst coating methods for direct methanol fuel cells

Hyung Joo Choi, Jinsoo Kim, Yongchai Kwon, Jonghee Han

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The performance of direct methanol fuel cells (DMFCs) with membrane-electrode assemblies (MEAs) made separately by three different catalyst coating methods, namely, air-spray, electro-spray and dual-mode spray, is evaluated. Platinum-ruthenium (PtRu) is incorporated as a catalyst for the anode. Several techniques (XRD, FE-SEM, and TEM) are used to examine whether the coating method affects the morphological features of the PtRu catalyst, whereas cyclic voltammetry is used to evaluate the active surface area. The cell polarization curves attained for the three coating methods that use different methanol concentrations are compared to determine the best method. It is found that the PtRu catalyst coated by the dual-mode spray shows the most uniform nanoparticle distribution and the highest active surface area. The DMFC performance is best when the dual-mode spray is employed (165 mW cm-2 at 2 M methanol).

Original languageEnglish
Pages (from-to)160-164
Number of pages5
JournalJournal of Power Sources
Volume195
Issue number1
DOIs
Publication statusPublished - 2010 Jan 1
Externally publishedYes

Fingerprint

Direct methanol fuel cells (DMFC)
fuel cells
sprayers
Ruthenium
coating
methyl alcohol
Platinum
catalysts
Coatings
Catalysts
ruthenium
platinum
Methanol
Cyclic voltammetry
Anodes
assemblies
Polarization
Nanoparticles
Transmission electron microscopy
Membranes

Keywords

  • Air-spray
  • Direct methanol fuel cell
  • Dual-mode spray
  • Electro-spray

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Physical and Theoretical Chemistry

Cite this

Comparative study of three different catalyst coating methods for direct methanol fuel cells. / Choi, Hyung Joo; Kim, Jinsoo; Kwon, Yongchai; Han, Jonghee.

In: Journal of Power Sources, Vol. 195, No. 1, 01.01.2010, p. 160-164.

Research output: Contribution to journalArticle

Choi, Hyung Joo ; Kim, Jinsoo ; Kwon, Yongchai ; Han, Jonghee. / Comparative study of three different catalyst coating methods for direct methanol fuel cells. In: Journal of Power Sources. 2010 ; Vol. 195, No. 1. pp. 160-164.
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