کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7709681 | 1497334 | 2017 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In situ cathode polarization measurement in alkaline anion exchange membrane water electrolyzer equipped with a PdNiFeCo/C-Ceria hydrogen evolution electrocatalyst
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Ni foam was modified by a catalyst with low content of Pd, Ni, Fe and Co metal nanoparticles (PdNiFeCo/C-Ceria-NF) and evaluated as the cathode in alkaline anion exchange membrane (AAEM) water electrolyzer. The electrochemical activity of the electrode in hydrogen evolution reaction (HER) was investigated using cyclic voltammetry (CV) and Linear Sweep Voltammetry (LSV) techniques. The performance of catalyst as the cathode was investigated in an AAEM electrolyzer single cell by separating of the anode and cathode polarizations. PdNiFeCo/C-Ceria-NF exhibited a high catalytic activity toward HER and AAEM cathode reaction. PdNiFeCo/C-Ceria-NF showed a low Tafel slope (â79Â mV decâ1), and low overpotential at the current density of 10Â mAÂ cmâ2 (â14Â mV) in HER. Also, PdNiFeCo/C-Ceria-NF electrode showed an excellent stability performance in alkaline media during 30Â h. The membrane electrode assembly (MEA) which was equipped with PdNiFeCo/C-Ceria-NF exhibited the cell voltage of 2.31Â V compared to 2.22Â V for Pt/C on Ni foam (Pt/CNF) at the current density of 300Â mAÂ cmâ2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 43, 26 October 2017, Pages 26563-26574
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 43, 26 October 2017, Pages 26563-26574
نویسندگان
Mohammad Zhiani, Fariba Jalili, Saeedeh Kamali,