کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7722642 1497524 2013 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evaluation of hydrogen sorption models for AB5-type metal alloys by employing a gravimetric technique
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Evaluation of hydrogen sorption models for AB5-type metal alloys by employing a gravimetric technique
چکیده انگلیسی
This paper is concerned with hydrogen absorption and desorption in AB5-type hydrogen storage metal alloys. We give a brief overview on models which have been proposed for hydrogen sorption in metals over the past decades. We choose three models based on different perspectives, i.e. thermodynamics, reaction kinetics, and mere observation (empiricism), and evaluate their applicability in order to describe the sorption behaviour. Additionally, we propose a model which is based on a cumulative distribution function. In order to evaluate the models, the hydrogen absorption and desorption isotherms of LaNi5 and LaNi4.5Co0.5 are measured by means of a gravimetric technique. A nonlinear regression is performed to fit the models to experimental data. The computed model parameters are compared to values reported in the literature. The emphasis is given to the applicability of the models with respect to describing the non-ideality of the plateau region and the continuity/smoothness of phase transition regions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 38, Issue 21, 17 July 2013, Pages 8838-8851
نویسندگان
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