Nanostructured Pd-Based Electrocatalyst and Membrane Electrode Assembly Behavior in a Passive Direct Glycerol Fuel Cell

N. Yahya, Siti Kartom Kamarudin, N. A. Karim, S. Basri, A. M. Zanoodin

Research output: Contribution to journalArticle

Abstract

The aim of this study was to synthesize, characterize, and observe the catalytic activity of Pd 1 Au 1 supported by vapor-grown carbon nanofiber (VGCNF) anode catalyst prepared via the chemical reduction method. The formation of the single-phase compounds was confirmed by X-ray diffraction (XRD) and Rietveld refinement analysis, which showed single peaks corresponding to the (111) plane of the cubic crystal structure. Further analysis was carried out by field emission scanning emission microscopy (FESEM), energy dispersive X-ray analysis (EDX), nitrogen adsorption/desorption measurements, and X-ray photoelectron spectroscopy (XPS). The electrochemical performance was examined by cyclic voltammetry tests. The presence of mesoporous VGCNF as support enables the use of a relatively small amount of metal catalyst that still produces an excellent current density (66.33 mA cm −2 ). Furthermore, the assessment of the kinetic activity of the nanocatalyst using the Tafel plot suggests that Pd 1 Au 1 /VGCNF exerts a strong electrocatalytic effect in glycerol oxidation reactions. The engineering challenges are apparent from the fact that the application of the homemade anode catalyst to the passive direct glycerol fuel cell shows the power density of only 3.9 mW cm −2 . To understand the low performance, FESEM observation of the membrane electrode assembly (MEA) was carried out, examining several morphological defects that play a crucial role and affect the performance of the direct glycerol fuel cell.

Original languageEnglish
Article number52
JournalNanoscale Research Letters
Volume14
DOIs
Publication statusPublished - 1 Jan 2019

Fingerprint

Carbon nanofibers
electrocatalysts
Electrocatalysts
glycerols
Glycerol
fuel cells
Fuel cells
assembly
Vapors
vapors
membranes
Membranes
catalysts
Field emission
Electrodes
Catalysts
electrodes
field emission
carbon
Microscopic examination

Keywords

  • Carbon nanofiber
  • Catalyst
  • Glycerol oxidation
  • Membrane
  • Palladium

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Nanostructured Pd-Based Electrocatalyst and Membrane Electrode Assembly Behavior in a Passive Direct Glycerol Fuel Cell. / Yahya, N.; Kamarudin, Siti Kartom; Karim, N. A.; Basri, S.; Zanoodin, A. M.

In: Nanoscale Research Letters, Vol. 14, 52, 01.01.2019.

Research output: Contribution to journalArticle

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