Low-Pt Content Carbon-Supported Pt–Ni–TiO2 Nanotube Electrocatalyst for Direct Methanol Fuel Cells

Abstract

Low-Pt content (5%) carbon-supported Pt-NiTiO 2 nanotube electrocatalysts were prepared via a microwave-assisted polyol strategy. Physical and morphological properties of these electrocatalysts were characterized by X-ray diffraction (XRD), high resolution transmission electron microscope (HRTEM), and energy dispersive X-ray spectroscopy (EDX). Cyclic voltammetry and chronoamperometry studies clearly suggested that the Pt(5%)-Ni(10%)-TiO 2 nanotube (10%) supported by Vulcan XC-72 is better than the commercial 20% Pt/C electrocatalyst for methanol electro-oxidation in direct methanol fuel cells (DMFCs).

An overview of metal oxide materials as electrocatalysts and supports for polymer electrolyte fuel cells

“…53,54 Maiyalagan and Jiang prepared Pt/TiO 2 nanotubes and Pt(5%)-Ni(10%)-TiO 2 nanotubes(10%)/C, respectively. 55,56 The catalysts exhibit better catalytic performance for the MOR than the commercial E-TEK catalyst. Rettew et al prepared Pt nanocatalysts supported on TiO 2 nanotube arrays by spontaneous growth and galvanic replacement of a Cu precursor layer.…”

Improved catalytic performance of Pt/TiO2 nanotubes electrode for ammonia oxidation under UV-light illumination

“…Recently, the research of TiO 2 as supports has also attracted great interest in the field of direct methanol fuel cells [22,23,33,34]. The results indicated that TiO 2 can modify the electronic property of Pt surface and enhance the CO tolerance of the Pt catalysts, and consequently improve the electrocatalytic activity of Pt for methanol oxidation [22,23,35].…”

Preparation and Characterization of Platinum-Decorated Ru/C Catalyst with High Performance and Superior Poison Tolerance

“…Enormous effort has been put into increasing Pt utilization efficiency in fuel cells [10][11][12] . The formation of Pt alloys is certainly one way to enhance Pt utilization and numerous reports have focused on this topic [13][14][15] .…”