Fuel cell testing of Pt–Ru catalysts supported on differently prepared and pretreated carbon nanotubes

2013 ◽  
Vol 98 ◽  
pp. 94-103 ◽  
Author(s):  
Wojciech Tokarz ◽  
Grzegorz Lota ◽  
Elzbieta Frackowiak ◽  
Andrzej Czerwiński ◽  
Piotr Piela
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cell ◽  
Ru Catalysts ◽  
Cell Testing

Non-mercury catalytic acetylene hydrochlorination over Ru catalysts enhanced by carbon nanotubes

RSC Advances ◽  
2015 ◽  
Vol 5 (12) ◽  
pp. 9002-9008 ◽  
Author(s):  
Guangbi Li ◽  
Wei Li ◽  
Haiyang Zhang ◽  
Yanfeng Pu ◽  
Mengxia Sun ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Catalytic Activity ◽  
Acetylene Hydrochlorination ◽  
Ru Catalysts ◽  
Inner Diameter

Ru catalysts deposited inside the channels of the CNTs show higher catalytic activity. Ru-in-CNT catalyst exhibited an acetylene conversion of 95.0% at 170 °C and 10 h. CNTs with an inner diameter of 3–7 nm can functionalize as an efficient support.

Fast Degradation for High Activity: Oxygen- and Nitrogen-Functionalised Carbon Nanotubes in Solid-Acid Fuel-Cell Electrodes

ChemSusChem ◽  
2016 ◽  
Vol 9 (23) ◽  
pp. 3298-3306 ◽  
Author(s):  
Olga Naumov ◽  
Sergej Naumov ◽  
Roman Flyunt ◽  
Bernd Abel ◽  
Aron Varga
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cell ◽  
High Activity ◽  
Solid Acid ◽  
Fuel Cell Electrodes

scholarly journals Enhanced performance of a silicon microfabricated direct methanol fuel cell with PtRu catalysts supported on few-walled carbon nanotubes

Energy ◽  
2014 ◽  
Vol 65 ◽  
pp. 612-620 ◽  
Author(s):  
Maryam Borghei ◽  
Gianmario Scotti ◽  
Petri Kanninen ◽  
Timo Weckman ◽  
Ilya V. Anoshkin ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Direct Methanol ◽  
Ptru Catalysts ◽  
Walled Carbon Nanotubes ◽  
Methanol Fuel Cell

scholarly journals MOF Derived Catalysts for Oxygen Reduction Reaction in Proton Exchange Membrane Fuel Cell

2018 ◽  
Vol 778 ◽  
pp. 275-282
Author(s):  
Noaman Khan ◽  
Saim Saher ◽  
Xuan Shi ◽  
Muhammad Noman ◽  
Mujahid Wasim Durani ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Membrane Electrode Assembly ◽  
Reduction Reaction ◽  
Proton Exchange ◽  
Membrane Electrode ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon ◽  
Exchange Membrane

Highly porous ZIF-67 (Zeolitic imidazole framework) has a conductive crystalline metal organic framework (MOF) structure which was served as a precursor and template for the preparation of nitrogen-doped carbon nanotubes (NCNTs) electrocatalysts. As a first step, the chloroplatinic acid, a platinum (Pt) precursor was infiltrated in ZIF-67 with a precise amount to obtain 0.12 mg.cm-2 Pt loading. Later, the infiltrated structure was calcined at 700°C in Ar:H2 (90:10 vol%) gas mixture. Multi-walled nitrogen-doped carbon nanotubes were grown on the surface of ZIF-67 crystals following thermal activation at 700°C. The resulting PtCo-NCNTs electrocatalysts were deposited on Nafion-212 solid electrolyte membrane by spray technique to study the oxygen reduction reaction (ORR) in the presence of H2/O2 gases in a temperature range of 50-70°C. The present study elucidates the performance of nitrogen-doped carbon nanotubes ORR electrocatalysts derived from ZIF-67 and the effects of membrane electrode assembly (MEA) steaming on the performance of proton exchange membrane fuel cell (PEMFC) employing PtCo-NCNTs as ORR electrocatalysts. We observed that the peak power density at 70°C was 450 mW/cm2 for steamed membrane electrode assembly (MEA) compared to 392 mW/cm2 for an identical MEA without steaming.

Purification of catalytically produced carbon nanotubes for use as support for fuel cell cathode Pt catalyst

2007 ◽  
Vol 43 (2) ◽  
pp. 557-567 ◽  
Author(s):  
Ana Maria Rocco ◽  
Cristiane A. da Silva ◽  
Maria I. F. Macedo ◽  
Luis Fernando Maestro ◽  
Marcelo H. Herbst ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cell ◽  
Pt Catalyst ◽  
Fuel Cell Cathode ◽  
Cell Cathode

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

2019 ◽  
Author(s):  
Mohammad Kazemi Nasrabadi ◽  
Amir Ebrahimi-Moghadam ◽  
Mohammad Hosein Ahmadi ◽  
Ravinder Kumar ◽  
Narjes Nabipour
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 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.

Electron Promotion by Surface Functional Groups of Single Wall Carbon Nanotubes to Overlying Metal Particles in a Fuel-Cell Catalyst

2012 ◽  
Vol 124 (28) ◽  
pp. 7104-7107 ◽  
Author(s):  
Patraporn Luksirikul ◽  
Karaked Tedsree ◽  
Mark G. Moloney ◽  
Malcolm L. H. Green ◽  
Shik Chi Edman Tsang
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cell ◽  
Functional Groups ◽  
Metal Particles ◽  
Single Wall Carbon Nanotubes ◽  
Surface Functional Groups ◽  
Single Wall Carbon ◽  
Fuel Cell Catalyst
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