Ultrasmall PtSn alloy catalyst for ethanol electro-oxidation reaction

被引：37

作者：

Kwak, Da-Hee ^{[1
]}

Lee, Young-Woo ^{[1
]}

Han, Sang-Beom ^{[1
]}

Hwang, Eui-Tak ^{[1
]}

Park, Han-Chul ^{[1
]}

Kim, Min-Cheol ^{[1
]}

Park, Kyung-Won ^{[1
]}

机构：

[1] Soongsil Univ, Dept Chem Engn, Seoul 156743, South Korea

来源：

JOURNAL OF POWER SOURCES | 2015年 / 275卷

基金：

新加坡国家研究基金会;

关键词：

PtSn; Alloy; Nanoparticles; Ethanol; Electro-oxidation; METHANOL OXIDATION; FORMIC-ACID; SN CONTENT; NANOPARTICLES; ELECTROCATALYSTS; REDUCTION; RU; PD; ADSORPTION; PT(111);

D O I：

10.1016/j.jpowsour.2014.11.050

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：

To improve the electrocatalytic properties for an ethanol electro-oxidation reaction, modifications of Pt nanocrystallites have been used by alloying with other elements such as Ru, Sn, and Au. Here we demonstrate carbon supported Pt3Sn alloy electrocatalyst (Pt3Sn/C) synthesized using a thermal-decomposition method. The PtSn/C prepared by the present synthetic process shows a homogeneous distribution of ultrasmall alloy nanoparticles (-2.5 nm) in the presence of Pt and Sn metallic states. At 0.45 V, the Pt3Sn/C (0.35 mA cm(-2)) exhibits much higher current density as compared with Pt/C (0.13 mA cm(-2)). In an electrochemical stability test, the Pt3Sn/C supported quite high current density and thus showed 3% current reduction after the stability test. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：557 / 562

页数：6

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