Phosphotungsticacid-Titanialoaded polyaniline nanocomposite as efficient methanolelectro-oxidationcatalyst in fuel cells

Document Type

Article

Publication Date

5-1-2021

Abstract

In this study, we report a new phosphotungstic acid-Titania embedded polyaniline (PANI/PTA/TiO2) nanocomposite modified hybrid electrode for efficient methanol electro-oxidation reaction. The PANI/PTA/TiO(2)nanocomposite was prepared via a simple in-situ polymerization method. The fabricated modified electrode's surface morphology and elemental analysis were characterized using field-emission scanning electron microscopy with energy-dispersive X-ray spectroscopy and mapping technique. The phase structure and molecular vibrational studies were identified using an X-ray diffraction and Fourier-transform infrared spectroscopic techniques. The electrochemical performance of the modified electrodes was studied using cyclic voltammetry, chronoamperometry, and electrochemical impedance spectroscopic techniques. The PANI/PTA/TiO(2)nanohybrid modified electrode displayed the superior electro-catalytic activity towards methanol oxidation reaction at 0.2 V potential with the charge transfer resistance of 218 omega, and showed excellent stability up to 1200s in an alkaline medium. The developed nanocomposite material can be used as a potential nanohybrid anode catalyst for the application of direct methanol fuel cells.

Keywords

Direct methanol fuel cells, Electrocatalyst, Methanol electro-oxidation, PANI, PTA, TiO(2)nanohybrid

Publication Title

International Journal of Energy Research

Divisions

nanotechnology

Funders

Kaohsiung Medical University,Ministry of Science and Technology, Taiwan,Science and Engineering Research Board,King Saud University

Volume

45

Issue

6, SI

Publisher

John Wiley & Sons

Publisher Location

111 RIVER ST, HOBOKEN 07030-5774, NJ USA

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