One-pot synthesis of PtNi alloy nanoflowers supported on multi-walled carbon nanotubes with superior electrocatalytic activity for the oxygen reduction

被引：27
作者：
Guo, Dao-Jun [1 ]
Cui, Shu-Kun [2 ]
Cheng, Dan [1 ]
Zhang, Peng [1 ]
Jiang, Li [1 ]
Zhang, Can-Can [1 ]
机构：
[1] Qufu Normal Univ, Sch Chem & Chem Engn, Key Lab Life Organ Anal, Qufu 273165, Shandong, Peoples R China
[2] Jining Univ, Coll Elementary Educ, Qufu 273155, Shandong, Peoples R China
来源：
JOURNAL OF POWER SOURCES | 2014年 / 255卷
关键词：
Platinum-nickel alloy; Nanoflowers; Oxygen reduction; Electrocatalysts; Fuel cell; CATHODE CATALYSTS; NANOPARTICLES; PLATINUM; BEHAVIOR;
D O I：
10.1016/j.jpowsour.2013.12.117
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：
Well-defined PtNi alloy nanoflowers supported on multi-walled carbon nanotubes (PtNi-H/MWCNTs) are successfully synthesized through a novel and potentially general one-pot reaction that exploits an in situ sacrificial template. The detailed morphology, composition, and structure of the PtNi alloy nanoflowers are investigated by transmission electron microscopy, energy-dispersive X-ray spectroscopy, nitrogen adsorption-desorption isotherms and X-ray diffraction. The results demonstrate that the PtNi-H/MWCNTs are highly porous. The electrocatalytic activity and stability of the PtNi-H/MWCNTs for the oxygen reduction reaction (ORR) are investigated by rotating disk electrode voltammetry in 0.1 mol L-1 HClO4 solution. The electrochemical tests indicated that PtNi-H/MWCNTs exhibited superior ORR activity along with satisfactory stability and methanol-tolerance under acidic conditions, which made them promising electrocatalysts. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：157 / 162
页数：6
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