High stability platinum electrocatalysts with zirconia-carbon hybrid supports

被引：38

作者：

Lv, Haifeng ^{[1
]}

Cheng, Niancai ^{[1
]}

Peng, Tao ^{[1
]}

Pan, Mu ^{[1
]}

Mu, Shichun ^{[1
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 03期

基金：

美国国家科学基金会;

关键词：

HIGH-SURFACE-AREA; FUEL-CELL; CATALYSTS; NANOPARTICLES; PERFORMANCE; NANOTUBES; OXIDE; CORROSION; LIFETIME;

D O I：

10.1039/c1jm14076k

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 nano-ZrO2 shell was decorated successfully on the surface of carbon to improve the stability of an electrocatalyst. Pt nanoparticles (NPs) were formed on the support by an isothermal hydrolysis procedure. This composite was characterized by X-ray powder diffraction, thermogravimetric analysis, high-resolution transmission electron microscopy (HRTEM) with EDS and cyclic voltammogram techniques. HRTEM images show that the nano-ZrO2 shell has been decorated on the surface of carbon and 2-3 nm Pt NPs are dispersed on the carbon surface homogeneously, including the edge of the nano-ZrO2 shell. The electrochemical stability of the prepared Pt/ZrO2-C is enhanced considerably in comparison with a conventional Pt/C catalyst, which can be attributed to the inhibition of the migration and aggregation of Pt NPs on the support and the increase of the oxidation resistance of carbon with the nano-ZrO2 shell.

引用

页码：1135 / 1141

页数：7

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