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.

The effect of PtRuW ternary electrocatalysts on methanol oxidation reaction in direct methanol fuel cells

2010 ◽  
Vol 27 (3) ◽  
pp. 802-806 ◽  
Author(s):  
Dae Kyu Kang ◽  
Chang Soo Noh ◽  
Sang Tae Park ◽  
Jung Min Sohn ◽  
Seung Kon Kim ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Methanol Oxidation ◽  
Oxidation Reaction ◽  
Direct Methanol Fuel Cells ◽  
Methanol Oxidation Reaction ◽  
Direct Methanol ◽  
Methanol Fuel Cells

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.

In situ self-assembled N-rich carbon on pristine graphene as a highly effective support and cocatalyst of short Pt nanoparticle chains for superior electrocatalytic activity toward methanol oxidation

Nanoscale ◽  
2021 ◽  
Author(s):  
Xiuling Fan ◽  
Ming Zhao ◽  
Tianhao Li ◽  
Lian Ying Zhang ◽  
Mao-xiang Jing ◽  
...  
Keyword(s):  
Methanol Oxidation ◽  
Oxidation Reaction ◽  
Direct Methanol Fuel Cells ◽  
Methanol Oxidation Reaction ◽  
Pristine Graphene ◽  
Pt Nanoparticle ◽  
Direct Methanol ◽  
Methanol Fuel Cells ◽  
Nanoparticle Chains

Highly conductive cocatalysts with great promotion effect are critical for development of pristine graphene supported Pt-based catalysts for the methanol oxidation reaction (MOR) in direct methanol fuel cells (DMFCs), but...

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