Bimetallic PtRu Nanoparticles Supported on Functionalized Multiwall Carbon Nanotubes as High Performance Electrocatalyst for Direct Methanol Fuel Cells

NANO ◽  
2016 ◽  
Vol 11 (02) ◽  
pp. 1650022 ◽  
Author(s):  
Chunhui Tan ◽  
Juhui Sa ◽  
Feipeng Cai ◽  
Bo Jiang ◽  
Gai Yang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cells ◽  
Methanol Oxidation ◽  
Direct Methanol Fuel Cells ◽  
Multiwall Carbon Nanotubes ◽  
X Ray ◽  
Direct Methanol ◽  
Methanol Fuel Cells ◽  
Multiwall Carbon ◽  
Ptru Nanoparticles

PtRu nanoparticles (NPs) supported on acid treated multiwall carbon nanotubes (Pt1Ru1/MWCNTs) were prepared by a modified polyol method without adding any other surfactant or protective agent. The structural and compositional properties of the as-obtained samples were characterized by transmission electron microscopy (TEM), energy dispersive X-ray analysis (EDX), X-ray diffraction (XRD) and X-ray photoelectron (XPS) spectroscopy. The electrocatalytic performance of the catalyst was evaluated by cyclic voltammetry (CV), CO stripping voltammetry and chronoamperometry, indicating a high catalytic activity, excellent CO tolerance and stability for methanol oxidation. Interestingly, a series of accurate controllable experiments have been designed to explore the enhancement mechanism of Pt1Ru1/MWCNTs for methanol oxidation reaction. Most importantly, Pt1Ru1/MWCNTs composites were used as an anode catalyst in the direct methanol fuel cells (DMFCs) exhibiting outstanding power density (126.1 mW/cm[Formula: see text] 1.7 times higher than that of the commercial catalyst of Pt1Ru1/C (74.1 mW/cm[Formula: see text] (E-TEK).

scholarly journals Novel Anode Catalyst for Direct Methanol Fuel Cells

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
S. Basri ◽  
S. K. Kamarudin ◽  
W. R. W. Daud ◽  
Z. Yaakob ◽  
A. A. H. Kadhum
Keyword(s):  
Fuel Cells ◽  
Reaction Kinetics ◽  
Methanol Oxidation ◽  
Photoelectron Spectroscopy ◽  
Direct Methanol Fuel Cells ◽  
Binding Energies ◽  
Methanol Oxidation Reaction ◽  
X Ray ◽  
Direct Methanol ◽  
Methanol Fuel Cells

PtRu catalyst is a promising anodic catalyst for direct methanol fuel cells (DMFCs) but the slow reaction kinetics reduce the performance of DMFCs. Therefore, this study attempts to improve the performance of PtRu catalysts by adding nickel (Ni) and iron (Fe). Multiwalled carbon nanotubes (MWCNTs) are used to increase the active area of the catalyst and to improve the catalyst performance. Electrochemical analysis techniques, such as energy dispersive X-ray spectrometry (EDX), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and X-ray photoelectron spectroscopy (XPS), are used to characterize the kinetic parameters of the hybrid catalyst. Cyclic voltammetry (CV) is used to investigate the effects of adding Fe and Ni to the catalyst on the reaction kinetics. Additionally, chronoamperometry (CA) tests were conducted to study the long-term performance of the catalyst for catalyzing the methanol oxidation reaction (MOR). The binding energies of the reactants and products are compared to determine the kinetics and potential surface energy for methanol oxidation. The FESEM analysis results indicate that well-dispersed nanoscale (2–5 nm) PtRu particles are formed on the MWCNTs. Finally, PtRuFeNi/MWCNT improves the reaction kinetics of anode catalysts for DMFCs and obtains a mass current of 31 A g−1catalyst.

Bimetallic alloy and semiconductor support synergistic interaction effects for superior electrochemical catalysis

Nanoscale ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 4719-4728 ◽  
Author(s):  
Yunshan Zheng ◽  
Yan Zhai ◽  
Maomao Tu ◽  
Xinhua Huang ◽  
Mingcong Shu ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Methanol Oxidation ◽  
Oxidation Reaction ◽  
Direct Methanol Fuel Cells ◽  
Methanol Oxidation Reaction ◽  
Electrochemical Catalysis ◽  
Anode Catalysts ◽  
Bimetallic Alloy ◽  
Direct Methanol ◽  
Methanol Fuel Cells

The design and fabrication of economically viable anode catalysts for the methanol oxidation reaction (MOR) have been challenging issues in direct methanol fuel cells (DMFCs) over the decades.

scholarly journals Stable CO anti-poisoning and high durability of a Pt electrocatalyst supported on carbon nanotubes

RSC Advances ◽  
2017 ◽  
Vol 7 (63) ◽  
pp. 39767-39772 ◽  
Author(s):  
Jiuxiao Sun ◽  
Xinxin Yu ◽  
Quan Zhang ◽  
Ying Ling ◽  
Zehui Yang
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cells ◽  
Direct Methanol Fuel Cells ◽  
High Durability ◽  
Direct Methanol ◽  
Methanol Fuel Cells ◽  
Anodic Electrocatalyst

Stable CO anti-poisoning and high durability of an anodic electrocatalyst are very important for direct methanol fuel cells (DMFCs).

scholarly journals Galvanostatic Pulse Plating of PtRu Nanoparticles for Direct Methanol Fuel Cells

2019 ◽  
Vol 16 (2) ◽  
pp. 473-481
Author(s):  
Yu-Chi Hsieh ◽  
Yung-Jean Lu ◽  
Pu-Wei Wu ◽  
Yun-Min Chang ◽  
Yu-Fan Chiu
Keyword(s):  
Fuel Cells ◽  
Direct Methanol Fuel Cells ◽  
Pulse Plating ◽  
Direct Methanol ◽  
Methanol Fuel Cells ◽  
Ptru Nanoparticles
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