CNx-modified Fe3O4 as Pt nanoparticle support for the oxygen reduction reaction

被引：41
|
作者：
Wang, Rongfang [1 ,3 ,4 ]
Jia, Jingchun [1 ]
Wang, Hui [1 ]
Wang, Qizhao [1 ]
Ji, Shan [2 ]
Tian, Zhongqun [3 ,4 ]
机构：
[1] Northwest Normal Univ, Key Lab Ecoenvironm Related Polymer Mat, Minist Educ China, Key Lab Gansu Polymer Mat,Coll Chem & Chem Engn, Lanzhou 730070, Peoples R China
[2] Univ Western Cape, HySA Syst Competence Ctr, South African Inst Adv Mat Chem, ZA-7535 Cape Town, South Africa
[3] Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China
[4] Xiamen Univ, Dept Chem, Xiamen 361005, Peoples R China
来源：
JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2013年 / 17卷 / 04期
基金：
美国国家科学基金会; 中国国家自然科学基金;
关键词：
Electrocatalysts; PEMFC; ORR; Platinum; Iron oxide; CARBON; PLATINUM; CATALYSTS; PERFORMANCE; NANOTUBES; ELECTROCATALYSTS;
D O I：
10.1007/s10008-012-1948-4
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A novel electrocatalyst support material, nitrogen-doped carbon (CNx)-modified Fe3O4 (Fe3O4-CNx), was synthesized through carbonizing a polypyrrole-Fe3O4 hybridized precursor. Subsequently, Fe3O4-CNx-supported Pt (Pt/Fe3O4-CNx) nanocomposites were prepared by reducing Pt precursor in ethylene glycol solution and evaluated for the oxygen reduction reaction (ORR). The Pt/Fe3O4-CNx catalysts were characterized by X-ray diffraction, Raman spectra, X-ray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy. The electrocatalytic activity and stability of the as-prepared electrocatalysts toward ORR were studied by cyclic voltammetry and steady-state polarization measurements. The results showed that Pt/Fe3O4-CNx catalysts exhibited superior catalytic performance for ORR to the conventional Pt/C and Pt/C-CNx catalysts.
引用
收藏
页码：1021 / 1028
页数：8
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