Self-assembled CeO2 on carbon nanotubes supported Au nanoclusters as superior electrocatalysts for glycerol oxidation reaction of fuel cells

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 catalysts in methanol fuel cells leads to increasing the cost of this kind of fuel cell which is considered as a barrier to the 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 electro-catalyst in the 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 the oxidation onset potential of methanol for CNT has been around 20% less than CB, leading to the kinetic improvement of the oxidation reaction. The current density of methanol oxidation reaction increased up to 62% in CNT sample compared to CB supported one, therefore the active electrochemical surface area of the 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. Moreover, the resistance of the 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 the CNT electro-catalyst show remarkable improvement compared to CB electro-catalyst in the long term.

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PtRu catalysts supported on heteropolyacid and chitosan functionalized carbon nanotubes for methanol oxidation reaction of fuel cells

Physical Chemistry Chemical Physics ◽

10.1039/c1cp21271k ◽

2011 ◽

Vol 13 (36) ◽

pp. 16349 ◽

Cited By ~ 63

Author(s):

Zhiming Cui ◽

Chang Ming Li ◽

San Ping Jiang

Keyword(s):

Carbon Nanotubes ◽

Fuel Cells ◽

Methanol Oxidation ◽

Oxidation Reaction ◽

Methanol Oxidation Reaction ◽

Functionalized Carbon Nanotubes ◽

Ptru Catalysts

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

10.20944/preprints201905.0045.v1 ◽

2019 ◽

Author(s):

Habib Forootan Fard ◽

Mohammad Kazemi nasrabadi ◽

Amir Ebrahimi-Moghadam ◽

Mohammad Hossein Ahmadi ◽

Ely Salwana ◽

...

Keyword(s):

Carbon Nanotubes ◽

Fuel Cells ◽

Fuel Cell ◽

Carbon Black ◽

Oxidation Reaction ◽

High Energy ◽

Proton Exchange ◽

Operating Conditions ◽

High Energy Density ◽

Methanol Oxidation Reaction

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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Significant promotion effect of carbon nanotubes on the electrocatalytic activity of supported Pd NPs for ethanol oxidation reaction of fuel cells: the role of inner tubes

Chemical Communications ◽

10.1039/c4cc06185c ◽

2014 ◽

Vol 50 (89) ◽

pp. 13732-13734 ◽

Cited By ~ 25

Author(s):

Jin Zhang ◽

Yi Cheng ◽

Shanfu Lu ◽

Lichao Jia ◽

Pei Kang Shen ◽

...

Keyword(s):

Carbon Nanotubes ◽

Fuel Cells ◽

Significant Role ◽

Electrocatalytic Activity ◽

Oxidation Reaction ◽

Ethanol Oxidation ◽

Ethanol Oxidation Reaction ◽

Promotion Effect ◽

Supported Pd

Inner tubes of CNTs play a significant role in the electrocatalytic activity of supported Pd NPs for the ethanol oxidation reaction.

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

10.20944/preprints201906.0240.v1 ◽

2019 ◽

Author(s):

Mohammad Kazemi Nasrabadi ◽

Habib Forootan Fard ◽

Amir Ebrahimi-Moghadam ◽

Mohammad Hossein Ahmadi ◽

Ravinder Kumar ◽

...

Keyword(s):

Carbon Nanotubes ◽

Fuel Cells ◽

Fuel Cell ◽

Carbon Black ◽

Oxidation Reaction ◽

High Energy ◽

Proton Exchange ◽

Operating Conditions ◽

High Energy Density ◽

Methanol Oxidation Reaction

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 the 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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