کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7705394 | 1497296 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nickel-cobalt-oxide cathodes for hydrogen production by water electrolysis in acidic and alkaline media
ترجمه فارسی عنوان
کاتد نیکل کبالت اکسید برای تولید هیدروژن توسط الکترولیز آب در رسانه های اسیدی و قلیایی
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کلمات کلیدی
هیدروژن، الکترولیز آب، کبالت، نیکل، اکسید فلزی، کاتد،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
Mixed NiCo-oxide cathodes of various compositions were fabricated by a thermal-decomposition method and used as electrocatalysts for hydrogen production by water electrolysis in acidic and alkaline media. The oxide electrodes were found to be of a semi-crystalline structure, yielding the surface morphology characterized by a surface roughness factor going up to 25. Linear potentiodynamic and potentiostatic electrochemical measurements revealed that the Volmer reaction step controlled the kinetics of the hydrogen evolution on all the NiCo-oxide cathodes, and also on the pure metal Ni electrode (control). The Ni0.2Co0.8-oxide was identified as the best electrode material candidate among the investigated metal oxides, which was linked to the surface-area effect. However, its intrinsic activity was found to be lower than that of pure metallic Ni. Nevertheless, the Ni0.2Co0.8-oxide electrode showed a significantly higher electrocatalytic stability (fouling/deactivation tolerance) in comparison to metallic Ni.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 29, 19 July 2018, Pages 12917-12928
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 29, 19 July 2018, Pages 12917-12928
نویسندگان
Abraham Gomez Vidales, Kanghoon Choi, Sasha Omanovic,