توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Fabrication of Gas Diffusion Electrodes using Carbon Nanotube–Supported Pt Alloys
اطلاعات انتشار: اولین کنفرانس ملی هیدروژن و پیل سوختی، سال
تعداد صفحات: ۱۰
In this paper, we report the use of Pt binary and ternary alloys prepared by alloying of Pt with transition metals, as catalysts for fabricating of gas diffusion electrodes (GDEs). The electrocatalytic properties for the oxygen reduction reaction (ORR) we<\div>

۲Gas Diffusion Electrodes for Direct Methanol Fuel Cells using Methanol–Resistant Catalyst
اطلاعات انتشار: اولین کنفرانس ملی هیدروژن و پیل سوختی، سال
تعداد صفحات: ۱۲
This work try to solve the problem of methanol cross over through the polymer electrolyte in direct methanol fuel cells (DMFCs) by developing new cathode electrocatalysts with both higher methanol tolerance and higher activity for the oxygen reduction rea<\div>

۳Improve the Catalytic Activity of Pt in GDEs and Comparison of the Acidic and Alkaline Electrolytes
اطلاعات انتشار: اولین کنفرانس ملی هیدروژن و پیل سوختی، سال
تعداد صفحات: ۱۱
The objective of this study is to improve the catalytic activity of platinum by alloying with transition metals (Pd and Cd) in gas diffusion electrodes (GDEs) on oxygen reduction reaction (ORR) at cathode site and comparison of the acidic and alkaline ele<\div>

۴Study on Hydrogen Adsorption on Multi–Walled Carbon Nanotubes by Electrochemical Method
اطلاعات انتشار: سومین کنفرانس نانوساختارها، سال
تعداد صفحات: ۴
Multi–walled carbon nanotubes (MWCNTs) with the diameter distribution in the range of 50–100 nm and various lengths were synthesized using TCVD method. The present research tries to study their electrochemical hydrogen storage of the MWCNTs. Our findings show that the desorption process of hydrogen is composed of two steps with the voltages of about 0.75 and 0.15 V. The adsorption of hydrogen in the 0.15 V forms at the temperatures higher than 30oC, and the amount of energy necessary to desorb hydrogen is 1.68 eV. The hydrogen storage capacity increases with the increasing of electrolyte temperature from 30 to 60 oC for both types of the adsorptions. These results also show that with the increasing of temperature up to 70 oC, hydrogen storage capacity at the 0.75 V considerably decreases but hydrogen storage capacity at the 0.15 V remains constant.<\div>

۵Multi Walled Carbon Nanotube supported Pt–doped CeO2 Nanoparticles as Catalyst for PEMFCs
اطلاعات انتشار: چهارمین همایش پیل سوختی ایران، سال
تعداد صفحات: ۹
Multi–walled carbon nanotube –supported Pt–doped CeO2 nanoparticles were synthesized in an electrodeposition bath containing constant concentrations of H2PtCl6 and different concentrations of CeO2. The electrocatalytic activities of catalysts were studied in 0.5 M H2SO4 for oxygen reduction reaction for proton exchange membrane fuel cells (PEMFCs) by cyclic voltammetry, rotating disk electrode voltammetry, chronopotentiometry and chronoamperometry. The CeO2 containing electrocatalysts show improved electrochemical performances. The optimum results are in states that CeO2 concentration in electrodeposition bath is 10 mM. XRD analyze give additional information on the morphological structure of electrocatalysts.<\div>

۶Manufacture and characterization of sandwiched polymer nanocomposite for using in bipolar plate of PEMFC
اطلاعات انتشار: دومین کنفرانس ملی هیدروژن و پیل سوختی، سال
تعداد صفحات: ۱۰
The aim of this article is the manufacture of polymer based composite for using in bipolar plate (BP) of polymer exchange fuel cell (PEMFC). In this regard, some single–filler and double–filler and triple–filler composites are manufactured by using phenolic resin as polymer (P) and graphite (G), carbon fiber (CF) and expanded graphite (EG) as fillers. The electrical conductivity (EC), flexural strength (FS), toughness, porosity and gas permission of composites are determined. Characterization is performed by SEM and optic microscope. The final composite is a triple–filler composite sandwiched by a layer of CF cloth in the middle. Determining electrical and thermal conductivity, mechanical properties and gas permeation of this composite show that the properties of this nanocomposite is reached to DOE and these properties are better than graphite or metallic bipolar plates, therefore it can be introduced as a suitable candidate for bipolar plates.<\div>

۷Single walled carbon nanotube in the reaction layer of gas diffusion electrode for oxygen reduction reaction
اطلاعات انتشار: Iranian Journal of Hydrogen and Fuel Cell، اول،شماره۲، ۲۰۱۴، سال
تعداد صفحات: ۸
In this paper, the effect of surface area of reaction layers in gas diffusion electrodes on oxygen reduction reaction was investigated. For this purpose, various amounts (0.1, 0.2, 0.3, 0.4, 0.5, 1, 1.5 and zero %wt of total loading of reaction layer) of single walled carbon nanotube (SWCNT) were inserted in the reaction layer. The performance of gas diffusion electrodes for oxygen reduction reaction was studied in a three–electrode half–cell system, via linear sweep voltammetry (LSV), cyclic voltammetry (CV), chronoamperometry (CHA) and impedance analysis. The results show that, the existence of SWCNT in the reaction layer improves the exchange current density of ORR, the symmetry factor changed between 0.51 and 0.83, as a whole in the optimized condition (0.4% wt .SWCNT) tendency of gas diffusion electrode for ORR is increased. The addition, influences significantly in electrochemical surface area and the gas diffusion electrode with 0.4%wt SWCNT has lowest charge transfer resistance respect to other electrodes. Our results indicated that the best performance obtains for an electrode with 0.4% single walled carbon nanotube.
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