View in EDS

The synergy between multi-wall carbon nanotubes and Vulcan XC72R in microporous layers

Saved in:
Bibliographic Details
Title: The synergy between multi-wall carbon nanotubes and Vulcan XC72R in microporous layers
Authors: Gharibi, Hussein1 gharibi@modares.ac.ir, Javaheri, Masoumeh1, Mirzaie, Rasol Abdullah2
Source: International Journal of Hydrogen Energy. Sep2010, Vol. 35 Issue 17, p9241-9251. 11p.
Subjects: Carbon nanotubes, Porous materials, Oxidation-reduction reaction, Diffusion, Electrodes, Metal catalysts, Voltammetry
Abstract: Abstract: In this study, the effects of the addition of multi-wall carbon nanotubes (MWCNTs) into a microporous layer (MPL) containing Vulcan XC72R on the oxygen reduction reaction (ORR) were studied. We tested various percentages of MWCNTs and Vulcan XC72R in the MPLs of gas-diffusion electrodes (GDEs) with various Pt loadings in the catalyst layer. The performance of the ORR in the electrodes was studied with linear sweep voltammetry (LSV), electrochemical impedance spectroscopy (EIS), and chronoamperometry. The structures of the MPLs were investigated by using scanning electron microscopy (SEM), mercury porosimetry (MP), and gas permeability. In addition, the optimum polytetrafluoroethylene (PTFE) content of the MPL was determined. Our results indicate that the performances of the GDEs are optimal under the following conditions: (a) 60wt% MWCNTs and 40wt% Vulcan XC72R with a Pt loading of 0.115mg/cm2; (b) 80wt% MWCNTs and 20wt% Vulcan XC72R with a Pt loading of 0.5mg/cm2; and (c) 40wt% MWCNTs and 60wt% Vulcan XC72R with a Pt loading of 1mg/cm2. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract:Abstract: In this study, the effects of the addition of multi-wall carbon nanotubes (MWCNTs) into a microporous layer (MPL) containing Vulcan XC72R on the oxygen reduction reaction (ORR) were studied. We tested various percentages of MWCNTs and Vulcan XC72R in the MPLs of gas-diffusion electrodes (GDEs) with various Pt loadings in the catalyst layer. The performance of the ORR in the electrodes was studied with linear sweep voltammetry (LSV), electrochemical impedance spectroscopy (EIS), and chronoamperometry. The structures of the MPLs were investigated by using scanning electron microscopy (SEM), mercury porosimetry (MP), and gas permeability. In addition, the optimum polytetrafluoroethylene (PTFE) content of the MPL was determined. Our results indicate that the performances of the GDEs are optimal under the following conditions: (a) 60wt% MWCNTs and 40wt% Vulcan XC72R with a Pt loading of 0.115mg/cm2; (b) 80wt% MWCNTs and 20wt% Vulcan XC72R with a Pt loading of 0.5mg/cm2; and (c) 40wt% MWCNTs and 60wt% Vulcan XC72R with a Pt loading of 1mg/cm2. [ABSTRACT FROM AUTHOR]
ISSN:03603199
DOI:10.1016/j.ijhydene.2009.08.092