Nanostructured Platinum and Carbon Supported Pt-Ni Catalyst for Polymer Electrolyte Fuel Cell
Abstract
Among various types of fuel cells, the polymer electrolyte exchange membrane fuel cell (PEFC) using hydrogen and alcolhol are promising to be commercialized for vehicles due to hydrogen and alcohol usage. Till now, platium (Pt) is the most effective catalyst for electrode reactions in fuel cells. However, challenges for this catalyst are its scarcity and high cost, as well as the poisoning by the intermediates of the fuel oxidation, such as CO. Using nanoscale metallic or bimetallic electrocatalytic materials is supposed to facilitate the cost reducing and to increase the catalytic activity. In this work, nanoscale bimetallic PtNi catalysts with different atom ratios of Pt to Ni on carbon support (PtNi/C) have been synthesized by the polyol reduction method under ultrasonic irradiation. The reducing reagent was ethylene glycol (EG) and NaBH4 and support materials were carbon Vulcan XC-72R and carbon nanotube (CNT). The morphology, structure and specific area of synthesized materials were analyzed by transmission electron microscopy (TEM), nitrogen adsorption (BET) and X-Ray diffraction (XRD). The electrocatalytic activity of Pt/C, PtRu/C, PtNi/C and commercial Pt/C electrodes (Aldrich Sigma, 10%wt Pt/activated carbon) for alcohol oxidation was investigated by cyclic voltammetry (CV) and chronoamperometry (CA). The electrocatalyst for oxygene reduction reaction (ORR) was evaluated using Rotating Disk Electrode (RDE) techniques in acidic solution contanning 20mg/L dissolved oxygene at 25oC.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 05, 2014
- Source ID
- 10.1149/ma2014-02/21/1142
Entities
People
- My Loan Phung Le
- Tran Van Man
- Vu Thi Hong Phuong