کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
192998 459758 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of carbon support on the kinetic behaviour of a metal hydride electrode
ترجمه فارسی عنوان
اثر استفاده از کربن بر رفتار جنبشی یک الکترود هیدرید فلزی
کلمات کلیدی
هیدروژن، باتری. آلیاژهای هایبرید؛ نانولوله های کربنی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی

The possibility to improve the electrochemical behaviour of AB5-alloy commercial electrodes was studied using different carbons as support, such as carbon blacks and a selection of commercial and in-lab synthesised carbon nanotubes. The carbons selected for this work present different morphologies (i.e., spherical and tubular). Furthermore, they also present a variation of the porous structure and subsequent surface area, which are also going to influence their further electrochemical behaviour. Carbon samples were texturally characterised by the adsorption–desorption of N2 and CO2 at 77 and 273 K, respectively. The carbon structure was analysed by XRD, Raman, TEM, and the chemistry of the samples was also characterised by elemental analysis. The charge and discharge techniques, cyclic voltammetry, rate capability and linear polarisation were used for the electrochemical characterisation of the electrodes studied. The electrochemical behaviour of all the samples was related to their morphological, textural and chemical properties. The results show that there is a clear influence of the nature of the carbon support on the hydriding/dehydriding reaction of the alloy, and in the case of active carbons the kinetics decreases with the increase of the surface area of the carbon support.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 54, Issue 7, 28 February 2009, Pages 2010–2017
نویسندگان
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