Morphological features of electrodeposited Pt nanoparticles and its application as anode catalysts in polymer electrolyte formic acid fuel cells

被引：31

作者：

Jeon, Hongrae ^{[1
]}

Joo, Jiyong ^{[1
]}

Kwon, Youngkook ^{[1
]}

Uhm, Sunghyun ^{[2
]}

Lee, Jaeyoung ^{[1
,2
]}

机构：

[1] GIST, ERTL, DESE, Kwangju 500712, South Korea

[2] GIST, Ertl Ctr Electrochem & Catalysis, Kwangju 500712, South Korea

来源：

JOURNAL OF POWER SOURCES | 2010年 / 195卷 / 18期

基金：

新加坡国家研究基金会;

关键词：

Platinum; Anode catalysts; Electrodeposition; Formic acid oxidation; Fuel cells; SHAPE-CONTROLLED SYNTHESIS; SINGLE-CRYSTAL; PLATINUM; NANOCRYSTALS; ELECTROCATALYSIS; NANOSTRUCTURES; OXIDATION; KINETICS; SILVER;

D O I：

10.1016/j.jpowsour.2010.03.009

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：

Electrodeposited Pt nanoparticles on carbon substrate show various morphologies depending on the applied potentials. Dendritic, pyramidal, cauliflower-like, and hemi-spherical morphologies of Pt are formed at potential ranges between -0.2 and 0.3V (vs. Ag/AgCl) and its particle sizes are distributed from 8 to 26 nm. Dendritic bulky particles over 20 nm are formed at an applied potential of -0.2V. while low deposition potential of 0.2V causes dense hemi-spherical structure of Pt less than 10 nm. The influence of different Pt shapes on an electrocatalytic oxidation of formic acid is represented. Consequently, homogeneous distribution of Pt nanoparticles with average particle of ca. 14 nm on carbon paper results in a high surface to volume ratio and the better power performance in a fuel cell application. (C) 2010 Published by Elsevier B.V.

引用

页码：5929 / 5933

页数：5

共 27 条

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