Free-standing Pt@RuO2•xH2O nanorod arrays on Si wafers as electrodes for methanol electro-oxidation

被引：7

作者：

Zhao, Guangyu ^{[1
]}

Zhang, Li ^{[1
]}

Sun, Kening ^{[1
]}

Li, Hulin ^{[2
]}

机构：

[1] Harbin Inst Technol, Acad Fundamental & Interdisciplinary Sci, Harbin 150080, Heilongjiang, Peoples R China

[2] Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2014年 / 245卷

基金：

美国国家科学基金会;

关键词：

Anodic aluminum oxide template; Silicon wafer; Nanorod array; Electro-catalysis; Poisoning rate; HYDROUS RUTHENIUM OXIDE; FUEL-CELL APPLICATIONS; FORMIC-ACID; PLATINUM CATALYSTS; OXIDATION; MICROFABRICATION; ELECTROCATALYSTS; MEMBRANES;

D O I：

10.1016/j.jpowsour.2013.07.053

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：

RuO2 center dot xH(2)O nanorod arrays free-standing on Si wafers are prepared by an anodic aluminum oxide template assistant method. Pt nanograins in the size of 3-5 nm are deposited on the RuO2 center dot xH(2)O nanorod arrays uniformly by a cool sputtering approach. Electrochemical measurements indicate that, the Pt@RuO2 center dot xH(2)O nanorod arrays have larger electrochemical active areas (EAAs) and better poisoning resistant ability for methanol electro-oxidation, compared with Pt nanograins that deposited on Ti wafers directly (named Pt/Ti). The EAAs of Pt@RuO2 center dot xH(2)O and Pt/Ti electrodes are 40.6 and 31.1 m(2) g(-1), respectively. The poisoning rate of Pt@RuO2 center dot xH(2)O arrays is 8.9 x 10(-4)% per second, much smaller than that of Pt/Ti electrodes (3.4 x 10(-3)% per second). (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：892 / 897

页数：6

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