Preparation and electrochemical performance of Pt black-carbon nanotubecomposite for methanol oxidation reaction

سال انتشار: 1395
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 274

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شناسه ملی سند علمی:

ELECTROCHEMISTRY012_055

تاریخ نمایه سازی: 5 آذر 1397

چکیده مقاله:

Fuels cells are actively investigated as an attractive alternative to onventional fossil fuel combustion engines for cleaner power generations [1]. Direct methanol fuel cells (DMFCs) have attracted much attention of researchers due to their high energy density, non-pollution and other great advantages [2]. The excellent catalytic activity of platinum for the electrooxidation ofmethanol makes this metal preferable to be used as electrocatalysts both at anode and cathode of DMFCs [3]. This work reports the preparation, characterization, and electrocatalytic characteristics of a new metallic nanocatalyst. The catalyst, Pt black–carbon nanotube (Pt-CNT), was prepared by ultrasonication method and characterized by scanning electron microscopy (SEM), energydispersive spectroscopy (EDS), and voltammetry. The electrocatalytic properties of the Pt-CNT composite modified carbon paste electrode (Pt-CNT/CPE) for methanol (CH3OH) oxidation have been investigated by cyclic voltammetry (CV); high electrocatalytic activity of the Pt-CNT/CPE can be observed. This may be attributed to the high dispersion of Pt catalyst and the particularproperties of CNT support. The long-term stability of Pt-CNT composite was investigated in 0.05 M CH3OH in 0.1 M H2SO4 solution. The results imply that the Pt-CNT composite has goodpotential applications in fuel cells.

نویسندگان

Ebrahim Shojaie

Department of Chemistry, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran

Fereshteh Chekin

Department of Chemistry, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran

Shahla Fathi

Department of Chemistry, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran