High stability and activity of Pt electrocatalyst on atomic layer deposited metal oxide/nitrogen-doped graphene hybrid support

被引：49

作者：

Cheng, Niancai ^{[1
]}

Liu, Jian ^{[1
]}

Banis, Mohammad Norouzi ^{[1
]}

Geng, Dongsheng ^{[1
]}

Li, Ruying ^{[1
]}

Ye, Siyu ^{[2
]}

Knights, Shanna ^{[2
]}

Sun, Xueliang ^{[1
]}

机构：

[1] Univ Western Ontario, Dept Mech & Mat Engn, London, ON N6A 5B9, Canada

[2] Ballard Power Syst Inc, Burnaby, BC V5J 5J8, Canada

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2014年 / 39卷 / 28期

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

Pt nanocatalyst; Atomic layer deposition; Metal-oxide-metal-support; Fuel cells; OXYGEN REDUCTION REACTION; CARBON SUPPORT; ENHANCED ACTIVITY; CATALYST SUPPORT; ULTRATHIN; PERFORMANCE; NANOTUBES; CORROSION; MODEL; OXIDE;

D O I：

10.1016/j.ijhydene.2014.01.202

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 novel nanostructured support of ZrO2/nitrogen-doped graphene nanosheets (ZrO2/NGNs) hybrid was synthesized successfully by atomic layer deposition (ALD) technology to significantly improve the activity and stability of Pt electrocatalyst. Electrochemical test shows that Pt-ZrO2/NGNs catalyst has 2.1 times higher activity towards methanol oxidation reaction (MOR) than Pt/NGNs catalyst, due to the promotion by ZrO2 to the MOR on Pt surface. Pt-ZrO2/NGNs catalyst has higher electrochemical surface area (ECSA) and better oxygen reduction reaction (ORR) activity than Pt/NGNs catalyst. Pt-ZrO2/NGNs catalyst has also demonstrated 2.2 times higher durability than that of Pt/NGNs. The enhanced activity and durability were attributed to the unique triple-interaction of ZrO2-Pt-NGNs. These findings indicate that metal oxide-metal-support is a promising catalyst structure for low temperature fuel cells. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：15967 / 15974

页数：8

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