Journal ArticleDOI
Preparation and Characterization of Multiwalled Carbon Nanotube-Supported Platinum for Cathode Catalysts of Direct Methanol Fuel Cells
TLDR
In this paper, a multiwalled carbon nanotube-supported Pt (Pt/MWNT) nanocomposites were prepared by both the aqueous solution reduction of a Pt salt (HCHO reduction) and the reduction of an ion salt in ethylene glycol solution.Abstract:
Multiwalled carbon nanotube-supported Pt (Pt/MWNT) nanocomposites were prepared by both the aqueous solution reduction of a Pt salt (HCHO reduction) and the reduction of a Pt ion salt in ethylene glycol solution. For comparison, a Pt/XC-72 nanocomposite was also prepared by the EG method. The Pt/MWNT catalyst prepared by the EG method has a high and homogeneous dispersion of spherical Pt metal particles with a narrow particle-size distribution. TEM images show that the Pt particle size is in the range of 2-5 nm with a peak at 2.6 nm, which is consistent with 2.5 nm obtained from the XRD broadening calculation. Surface chemical modifications of MWNTs and water content in EG solvent are found to be the key factors in depositing Pt particles on MWNTs. In the case of the direct methanol fuel cell (DMFC) test, the Pt/MWNT catalyst prepared by EG reduction is slightly superior to the catalyst prepared by aqueous reduction and displays significantly higher performance than the Pt/XC-72 catalyst. These differences in catalytic performance between the MWNT-supported or the carbon black XC-72-supported catalysts are attributed to a greater dispersion of the supported Pt particles when the EG method is used, in contrast to aqueous HCHO reduction and to possible unique structural and higher electrical properties when contrasting MWNTs to carbon black XC-72 as a support.read more
Citations
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Journal ArticleDOI
Room temperature hydrogen gas sensor nanocomposite based on Pd-decorated multi-walled carbon nanotubes thin films
TL;DR: In this paper, multi-walled carbon nanotubes (MWCNTs) are successfully processed in the form of thin films (buckypapers), and their morphology and electrical behaviour are characterized.
Journal ArticleDOI
Carbon monoxide and ethanol oxidation on PtSn supported catalysts: Effect of the nature of the carbon support and Pt:Sn composition
Jaime Asgardi,J.C. Calderón,Francisco Alcaide,Amaia Querejeta,L. Calvillo,M.J. Lázaro,Gonzalo García,Elena Pastor +7 more
TL;DR: In this paper, the behavior of 20.5% PtSn nanoparticles with different Pt:Sn ratios (1:1 and 3:1) were supported on carbon black and carbon nanofibers.
Journal ArticleDOI
A review of the application and performance of carbon nanotubes in fuel cells
TL;DR: The application of carbon nanotubes in fuel cells is summarized and discussed in this article, where the method used to reduce the platinum, the effect of carbon-notubes on the fuel cell, improving the performance of fuel cell catalysts, the interaction between catalyst and carbon-nanotube support, and the synthetic conditions of carbon Nanotube supported catalyst.
Journal ArticleDOI
A robust fuel cell cathode catalyst assembled with nitrogen-doped carbon nanohorn and platinum nanoclusters
Linwei Zhang,Linwei Zhang,Ning Zheng,Ang Gao,Chun-Mei Zhu,Zhiyong Wang,Yuan Wang,Zujin Shi,Yan Liu +8 more
TL;DR: In this article, a highly durable and active nanocomposite cathode catalyst (Pt/NSWCNH) is assembled with unprotected Pt nanoclusters and nitrogen-doped single-wall carbon nanohorns as building blocks by a convenient process.
Journal ArticleDOI
Preparation and characterization of multi-walled carbon nanotube (MWCNTs)-supported Pt-Ru catalyst for methanol electrooxidation
TL;DR: In this article, multi-walled carbon nanotubes (MWCNTs) as a support of PtRu catalyst nanocomposites were prepared by colloid method in this work.
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