Enhanced utilization and durability of Pt nanoparticles supported on sulfonated carbon nanotubes

被引：15

作者：

Guo, Lin ^{[1
]}

Chen, Siguo ^{[1
]}

Wei, Zidong ^{[1
]}

机构：

[1] Chongqing Univ, Coll Chem & Chem Engn, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2014年 / 255卷

关键词：

Proton exchange membrane fuel cell; Sulfonated carbon nanotubes; High platinum utilization; Improved catalyst durability; CATALYST LAYER; OXYGEN REDUCTION; NAFION CONTENT; ELECTROCATALYST; GRAPHENE;

D O I：

10.1016/j.jpowsour.2014.01.040

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：

We have synthesized a hybrid catalyst with the high Pt utilization and durability, in which the Pt nanoparticles are deposited on the sulfonated carbon nanotubes (SO3H-Ar-CNTs) with conducting proton and electron. Electrochemical performance of the catalyst (Pt/SO3H-Ar-CNTs) is evaluated by the cyclic voltammograms, linear sweep voltammetry and fuel cell tests, respectively. The experimental results demonstrate that the Pt/SO3H-Ar-CNTs catalyst exhibits good oxygen reduction reaction activity, enhanced durability and excellent Pt utilization compared with the Pt/COOH-CNTs catalyst. The improved performance of Pt/SO3H-Ar-CNTs catalyst is ascribed to the introduction of the sulfonic acid group onto the CNTs surface by the covalent modification method, which ensures Pt NPs locate in triple-phase zones to increase Pt utilization and reduces the corrosion of the SO3H-Ar-CNTs. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：387 / 393

页数：7

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