Synthesis and characterization of Nb-TiO2 mesoporous microsphere and nanofiber supported Pt catalysts for high temperature PEM fuel cells

被引：40

作者：

Bauer, Alex ^{[1
]}

Chevallier, Laure ^{[2
]}

Hui, Rob ^{[1
]}

Cavaliere, Sara ^{[2
]}

Zhang, Jiujun ^{[1
]}

Jones, Deborah ^{[2
]}

Roziere, Jacques ^{[2
]}

机构：

[1] Natl Res Council Canada, Inst Fuel Cell Innovat, Vancouver, BC V6T 1W5, Canada

[2] Univ Montpellier 2, UMR CNRS 5253, Inst Charles Gerhardt Agregats Interfaces & Mat E, F-34095 Montpellier 5, France

来源：

ELECTROCHIMICA ACTA | 2012年 / 77卷

关键词：

Niobium doped titanium oxide; Mesoporous microsphere; Nanofiber; Catalyst support; Fuel cells oxygen reduction reaction; NB-DOPED TIO2; ELECTROCHEMICAL CHARACTERIZATION; METHANOL ELECTROOXIDATION; ELECTROCATALYTIC ACTIVITY; TITANIUM-DIOXIDE; PLATINUM; NANOPARTICLES; STABILITY; PERFORMANCE; PH;

D O I：

10.1016/j.electacta.2012.04.028

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

070208 [无线电物理];

摘要：

Two differently structured Nb-doped TiO2 support materials, i.e., mesoporous microspheres and nanofibers, were synthesized and used as Pt catalyst supports for the oxygen reduction reaction (ORR), which is a critical research topic for PEM fuel cells. Compared to a commercially available Pt/C catalyst, improved electrochemical ORR stability was observed when using the novel supports in an acidic environment. XRD, SEM, TEM, and BET were used to characterize the morphologies of these supports and the attached Pt catalyst. Electrochemical methods were used to measure both the ORR mass activity and stability of these materials. Improvement in both the specific area and conductivity were identified as the area for further development. Crown Copyright (c) 2012 Published by Elsevier Ltd. All rights reserved.

引用

页码：1 / 7

页数：7

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