PtRu nanoparticles dispersed on nitrogen-doped carbon nanohorns as an efficient electrocatalyst for methanol oxidation reaction

被引：43
|
作者：
Zhang, Linwei [1 ,2 ]
Gao, Ang [2 ]
Liu, Yan [2 ]
Wang, Yuan [2 ]
Ma, Jiantai
机构：
[1] Lanzhou Univ, Coll Chem & Chem Engn, SKIAOC, Lanzhou 730000, Peoples R China
[2] Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100871, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2014年 / 132卷
关键词：
Anodic catalyst; Nitrogen-doped carbon nanohorns; Methanol oxidation reaction; fuel cell; FUEL-CELL CATALYST; RU ELECTROCATALYST; CATHODE CATALYST; DIMETHYL ETHER; SUPPORTED PTRU; ATR-FTIR; ELECTROOXIDATION; NANOTUBES; PLATINUM; ALLOY;
D O I：
10.1016/j.electacta.2014.03.180
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A novel anode catalyst (PtRu/NCNHs) assembled with nitrogen-doped carbon nanohorns (NCNHs) and PtRu nanoparticles (1.9 nm) exhibits an obvious enhancement in the tolerance to carbonaceous intermediates and the electocatalytic activity for methanol oxidation reaction (MOR) in comparison to a commercial PtRu/C-JM catalyst and a home-made PtRu/Vulcan catalyst. The MOR mass activity of PtRu/NCNHs (850 mA mg(-1) (ptRu)) is 2.5 times as high as that of PtRu/C-JM (341 mA mg-1 (ptRu)). The MOR specific activity of PtRu/NCNHs is 1.8 times as high as that of PtRu/Vulcan having similar Pt/Ru atomic ratios, specific electrochemical surface areas and particle sizes of PtRu NPs. The electronic interaction between PtRu NPs and NCNHs is responsible for the enhancement in the MOR activity of PtRu/NCNHs. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：416 / 422
页数：7
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