کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7716600 | 1497473 | 2014 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterisation of a PEM electrolyser using the current interrupt method
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Characterisation of a PEM electrolyser using the current interrupt method Characterisation of a PEM electrolyser using the current interrupt method](/preview/png/7716600.png)
چکیده انگلیسی
A method is proposed to model the electrochemical characteristics of a Proton Exchange Membrane (PEM) electrolyser. The electrochemical characteristics, which include the Ohmic, activation and concentration losses, are modelled by means of an equivalent electric circuit impedance. The equivalent electric circuit impedance under consideration is the Randles-Warburg (RW) cell and the parameters are obtained through the current interrupt (CI) method. The CI method consists of two parts, 1) the natural voltage response (NVR) method to model the Ohmic losses, and 2) the current switching (CS) method to model the activation and concentration losses. A simulation model of the RW cell is used to verify and validate the CI method. Thereafter, the CI method is practically implemented and the results presented. Results show that the Ohmic losses correlates well with existing literature. The paper furthermore illustrates the capability of the CI method to visually illustrate the RW impedance through Nyquist diagrams. Nyquist diagrams are used to illustrate the concentration losses and indicate the degradation state of the PEM at specific operating conditions. Results show that the concentration losses decrease with an increase in the operating current density and temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 36, 12 December 2014, Pages 20865-20878
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 36, 12 December 2014, Pages 20865-20878
نویسندگان
C.A. Martinson, G. van Schoor, K.R. Uren, D. Bessarabov,