Electrooxidation of Methanol on Pt @Ni Bimetallic Catalyst Supported on Porous Carbon Nanofibers

被引：46
作者：
Chen, JianYi [1 ]
Niu, QiJian [2 ]
Chen, GuangKai [2 ]
Nie, Jun [2 ]
Ma, GuiPing [2 ]
机构：
[1] Changzhou Univ, Sch Mat Sci & Engn, Changzhou 213164, Jiangsu, Peoples R China
[2] Beijing Univ Chem Technol, Minist Educ, Key Lab Carbon Fiber & Funct Polymers, Beijing 100029, Peoples R China
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2017年 / 121卷 / 03期
关键词：
NITROGEN-DOPED GRAPHENE; OXYGEN REDUCTION; ELECTROCATALYTIC OXIDATION; ALLOY NANOPARTICLES; ALKALINE MEDIA; PTRU CATALYSTS; PERFORMANCE; NANOTUBES; TEMPERATURE; COMPOSITE;
D O I：
10.1021/acs.jpcc.6b10882
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：
This paper describes the preparation of Ni/Pt/CNFs via electrospinning technology, carbonization process, and chemical reduction method. The structure and composition of Ni/Pt/CNFs were characterized with X-ray diffraction, Raman spectroscopy, nitrogen adsorption isotherms, and X-ray photoelectron. spectroscopy. Meanwhile, the morphology was analyzed with scanning electron microscopy and transmission electron microscopy. The electrochemical performance was evaluated by oxygen reduction reaction (ORR), cyclic voltammetry and chronopotentiometry. The results indicated that Pt and Ni nanoparticles were completely reduced in the experimental process and homogeneously distributed on the nanofibers with the average diameters of 3.8 and 17.8 nm, respectively. In addition, the Ni-50/Pt/CNEs catalyst showed excellent electrocatalytic performance for ORR. and superior specific and mass activities for methanol oxidation (the maximum current density is ca. 10.9 mA cm(-2)) and exhibited a slightly slower current decay over time; better than the reference samples which indicated a higher tolerance to CO-like intermediates.
引用
收藏
页码：1463 / 1471
页数：9
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