Electrochemical studies on graphene oxide-supported metallic and bimetallic nanoparticles for fuel cell applications

被引：65

作者：

Gupta, Vinod Kumar ^{[1
]}

Yola, Mehmet Lutfi ^{[2
]}

Atar, Necip ^{[3
]}

Ustundag, Zafer ^{[3
]}

Solak, Ali Osman ^{[4
,5
]}

机构：

[1] Indian Inst Technol, Dept Chem, Roorkee 247667, Uttar Pradesh, India

[2] Sinop Univ, Fac Arts & Sci, Dept Chem, Sinop, Turkey

[3] Dumlupinar Univ, Fac Arts & Sci, Dept Chem, Kutahya, Turkey

[4] Ankara Univ, Fac Engn, Dept Chem, TR-06100 Ankara, Turkey

[5] Kyrgyz Turkish Manas Univ, Fac Engn, Dept Chem Engn, Bishkek, Kyrgyzstan

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2014年 / 191卷

关键词：

Fuel cell; Graphene oxide; Nanoparticle; Characterization; Methanol oxidation; CONTAINING CARBON NANOTUBES; ELECTROCATALYTIC ACTIVITY; POTENTIOMETRIC SENSOR; METHANOL OXIDATION; GOLD NANOPARTICLES; MEMBRANE; PLATINUM; ELECTRODE; COMPLEX; NANOCOMPOSITE;

D O I：

10.1016/j.molliq.2013.12.014

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A fuel cell is an electrochemical cell that converts a source fuel into an electrical current It generates electricity inside a cell through reactions between a fuel and an oxidant, triggered in the presence of an electrolyte. Fuel cells have been attracting more and more attention in recent decades due to high-energy demands, fossil fuel depletions, and environmental pollution throughout world. In this study, different sized metallic and bimetallic nanoparticles (AuNPs, Fe@AuNPs, Ag@AuNPs) were synthesized on graphene oxide sheets and their electrocatalytic activities for methanol oxidation were investigated. All the catalysts were characterized by transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS). Electrochemical measurements are performed to compare the catalytic efficiencies of methanol oxidation. Experimental results demonstrated that graphene oxide-supported bimetallic nanoparticles enhanced electrochemical efficiency for methanol electro-oxidation with regard to diffusion efficiency, oxidation potential and forward oxidation peak current. Graphene oxide-supported Ag@AuNPs, in comparison to graphene oxide-supported Fe@AuNPs and AuNPs, showed the more efficiency for methanol electro-oxidation. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：172 / 176

页数：5

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