Carbon nanotube-supported Pt-Alloyed metal anode catalysts for methanol and ethanol oxidation

Themsirimongkon, Suwaphid; Sarakonsri, Thapanee; Lapanantnoppakhun, Somchai; Jakmunee, Jaroon; Saipanya, Surin

doi:10.1016/j.ijhydene.2018.04.145

Cited by 38 publications

(25 citation statements)

References 54 publications

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“…As the integrated CNTs often show a chemically inert nature, surface treatment or chemical doping is necessary for CNTs to further enlarge their surface areas and to increase their affiliation with metal-based catalysts by introducing functionalized groups (such as the oxygen-containing group) on the surface [86]. For example, HNO 3 -treated CNTs were employed as the support material of Pt-based nanoparticles [31]. The obtained bimetallic PtAu/CNTs and PtPd/CNTs catalysts exhibit large ECSAs, low onset potentials and excellent stabilities.…”

Section: Carbon-based Materialsmentioning

confidence: 99%

“…Carbon black is among the most widely used supports for the catalysts due to its relatively high surface area and wide accessibility. Besides, graphene [30], carbon nanotubes [29,31], metal oxides [32], carbon fibers [33], metal hydroxides [34], and their hybrids [35,36] have been employed as alternative supports for ethanol electrocatalysts.…”

Section: Introductionmentioning

confidence: 99%

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Advanced Catalytic Materials for Ethanol Oxidation in Direct Ethanol Fuel Cells

et al. 2020

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Direct ethanol fuel cells (DEFCs) have emerged as promising and advanced power systems that can considerably reduce fossil fuel dependence, and thus have attracted worldwide attention. DEFCs have many apparent merits over the analogous devices fed with hydrogen or methanol. As the key constituents, the catalysts for both cathodes and anodes usually face some problems (such as high cost, low conversion efficiency, and inferior durability) that hinder the commercialization of DEFCs. This review mainly focuses on the most recent advances in nanostructured catalysts for anode materials in DEFCS. First, we summarize the effective strategies used to achieve highly active Pt- and Pd-based catalysts for ethanol electro-oxidation, including composition control, microstructure design, and the optimization of support materials. Second, a few non-precious catalysts based on transition metals (such as Fe, Co, and Ni) are introduced. Finally, we outline the concerns and future development of anode catalysts for DEFCs. This review provides a comprehensive understanding of anode catalysts for ethanol oxidation in DEFCs.

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Section: Carbon-based Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Advanced Catalytic Materials for Ethanol Oxidation in Direct Ethanol Fuel Cells

et al. 2020

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“…Electro-catalyzation of the oxygen reaction is a crucial step in fuel cells utilization (Liu, Xu, Li et al (2019)). Integration of Platinum (Pt) and other metals with different stoichiometric ratios foe CNT support affects the active electrochemical area in catalytic oxidation reactions (Themsirimongkon, Sarakonsri, Lapanantnoppakhun et al (2018)). For any decades, finding anode catalyst for fuel cells with high activity and stability has been a great challenge (Li, Zhou, Tang et al (2018)).…”

Section: Abstract: Fuel Cell; Carbon Nanotube; Catalyst; Platinum-rutmentioning

confidence: 99%

Electrochemical Performance Improvement of the Catalyst of the Methanol Micro-Fuel Cell Using Carbon Nanotubes

Nasrabadi¹,

Ebrahimi‐Moghadam²,

Ahmadi³

et al. 2019

Preprint

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“…Electro-catalyzation of the oxygen reaction is a crucial step in fuel cells utilization [6]. Integration of Platinum (Pt) and other metals with different stoichiometric ratios foe CNT support affects the active electrochemical area in catalytic oxidation reactions [7]. For any decades, finding anode catalyst for fuel cells with high activity and stability has been a great challenge [8].…”

mentioning

confidence: 99%

“…When sodium dodecyl sulfate was used as surfactant, more catalytic activity and better results was reported compared to Pt-Pd/CNT. Themsirimongkon et al [7] covered carbon nanotubes with different metallic compositions, such as Pd and Au, in order to improve the electrocatalytic activity of alcohol oxidation. They observed uniform distribution of the metal particles with diameters of 2 to 6 nm in their experiments.…”

mentioning

confidence: 99%

Electrochemical Performance Improvement of the Catalyst of the Methanol Micro-Fuel Cell Using Carbon Nanotubes

H¹,

M²,

Ebrahimi‐Moghadam³

et al. 2019

Preprint

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Due to low working temperature, high energy density and low pollution, proton exchange fuel cells have been investigated under different operating conditions in different applications. Using platinum catalyst in methanol fuel cell leads to increasing the cost of this kind of fuel cells which is considered as a barrier to commercialism of this technology. For this reason, a lot of efforts have been made to reduce the loading of the catalyst required on different supports. In this study, carbon black (CB) and carbon nanotubes (CNT) have been used as catalyst supports of the fuel cell as well as using the double-metal combination of platinum-ruthenium (PtRu) as anode electrode catalyst and platinum (Pt) as cathode electrode catalyst. The performance of these two types of the electro-catalyst in oxidation reaction of methanol has been compared based on electrochemical tests. Results showed that the carbon nanotubes increase the performance of the micro-fuel cell by 37% at maximum power density, compared to the carbon black. Based on thee-electrode tests of chronoamperometry and voltammetry, it was found that oxidation onset potential of methanol for CNT has been around 20% less than CB, leading to the kinetic improvement of the oxidation reaction. In addition, the active electrochemical surface area of catalyst has been increased up to 90% by using CNT compared to CB which shows the significant rise of the electrocatalytic activity in CNT supported catalyst with 62% increase in current density of methanol oxidation reaction respect to CB supported one. Moreover, the resistance of CNT supported sample to poisonous intermediate species has been found 3% more than CB supported one. According to the chronoamperometry test results, it was concluded that the performance and sustainability of NCT electro-catalyst shows remarkable improvement compared to CB electro-catalyst in long term.

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Carbon nanotube-supported Pt-Alloyed metal anode catalysts for methanol and ethanol oxidation

Cited by 38 publications

References 54 publications

Advanced Catalytic Materials for Ethanol Oxidation in Direct Ethanol Fuel Cells

Advanced Catalytic Materials for Ethanol Oxidation in Direct Ethanol Fuel Cells

Electrochemical Performance Improvement of the Catalyst of the Methanol Micro-Fuel Cell Using Carbon Nanotubes

Electrochemical Performance Improvement of the Catalyst of the Methanol Micro-Fuel Cell Using Carbon Nanotubes

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