Synthesis, Activity and Durability of Pt Nanoparticles Supported on Multi-walled Carbon Nanotubes for Oxygen Reduction

被引：34
作者：
Sheng, Wenchao [1 ]
Lee, Seung Woo [2 ]
Crumlin, Ethan J. [2 ]
Chen, Shuo [2 ]
Shao-Horn, Yang [2 ,3 ]
机构：
[1] MIT, Dept Chem, Cambridge, MA 02139 USA
[2] MIT, Dept Mech Engn, Cambridge, MA 02139 USA
[3] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2011年 / 158卷 / 11期
基金：
美国国家科学基金会;
关键词：
FUEL-CELL ELECTROCATALYSTS; METAL NANOPARTICLES; PLATINUM NANOPARTICLES; NOBLE-METAL; CATALYSTS; MEMBRANE; ELECTRODEPOSITION; DEGRADATION; INSTABILITY; DECORATION;
D O I：
10.1149/2.066111jes
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Carbon nanotube supported metal nanoparticles (NPs) have attracted considerable attention due to their great potential for heterogeneous catalysis. In this paper, surfactant-free and well dispersed platinum (Pt) NPs supported on multi-walled carbon nanotubes (MWCNTs) were synthesized by immobilization of negatively charged Pt precursor (PtCl42-) onto positively charged MWCNTs (NH3+-MWCNTs) by electrostatic interactions, which was reduced subsequently to Pt NPs of similar to 2 nm supported on MWCNTs by heating in 4% H-2 atmosphere. The Pt loading on MWCNTs could be controlled by the pH of the suspension of Pt precursor and MWCNTs, and the Pt-precursor concentration in the suspension. These Pt NPs supported on MWCNTs showed comparable oxygen reduction reaction (ORR) activity to a commercial Pt catalyst supported on high-surface-area carbon but with enhanced durability. (C) 2011 The ElectrochemicalSociety. [DOI: 10.1149/2.066111jes] All rights reserved.
引用
收藏
页码：B1398 / B1404
页数：7
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