Branched platinum-on-palladium bimetallic heteronanostructures supported on reduced graphene oxide for highly efficient oxygen reduction reaction

被引：30

作者：

Li, Shan-Shan ^{[1
]}

Zheng, Jie-Ning ^{[1
]}

Wang, Ai-Jun ^{[1
]}

Tao, Fang-Lei ^{[1
]}

Feng, Jiu-Ju ^{[1
]}

Chen, Jian-Rong ^{[1
]}

Yu, Haiying ^{[1
]}

机构：

[1] Zhejiang Normal Univ, Coll Geog & Environm Sci, Coll Chem & Life Sci, Jinhua 321004, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2014年 / 272卷

关键词：

Reduced graphene oxide; Bimetallic nanodendrites; Octylphenoxypolye thoxyethanol; Oxygen reduction reaction; ENHANCED ELECTROCATALYTIC PROPERTIES; IN-SITU SYNTHESIS; FACILE SYNTHESIS; METHANOL ELECTROOXIDATION; ETHANOL OXIDATION; PD NANODENDRITES; GREEN SYNTHESIS; ALKALINE MEDIA; NANOPARTICLES; NANOCRYSTALS;

D O I：

10.1016/j.jpowsour.2014.09.052

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：

In this work, a facile one-pot wet-chemical approach is developed for synthesis of three-dimensional platinum-on-palladium (Pt-on-Pd) bimetallic nanodendrites supported on reduced graphene oxide (rGO), where octylphenoxypolye thoxyethanol (NP-40) acts as a growth-directing agent and formic acid serves as a reducing agent under mild conditions. The nanocomposites exhibit enhanced oxygen reduction reaction activity (onset potential of 0.05 V, half-wave potential of -0.15 V, electron transfer number >3.99) and better stability in alkaline media. The diffusion-limited current densities of Pt-on-Pd/rGO at -0.60 V (3.99 mA cm(-2) and 22.72 mA mg(-1)) are much higher than those of PtPd/rGO, Pt/rGO, Pd/rGO, PtPd nanoparticles/rGO, Pt black, Pd black, Pt/C, and Pd/C catalysts. This method is general, facile, and green for preparation of rGO-supporting bimetallic electrocatalysts. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：1078 / 1085

页数：8

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