کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5350973 | 1503556 | 2017 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Seawater splitting for high-efficiency hydrogen evolution by alloyed PtNix electrocatalysts
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Robust electrocatalyst is a prerequisite to realize high-efficiency hydrogen evolution by water splitting. Expensive platinum (Pt) is a preferred electrode catalyst for state-of-the-art hydrogen evolution reaction (HER). We present here a category of alloyed PtNix electrocatalysts by a facile green chemical reduction method, which are used to catalyze HER during seawater splitting. The catalytic performances are optimized by tuning stoichiometric Pt/Ni ratio, yielding a maximized catalytic behavior for PtNi5 electrode. The minimized onset potential is as low as â0.38Â V and the corresponding Tafel slope is 119Â mVÂ decâ1. Moreover, the launched alloy electrodes have remarkable stability at â1.2Â V over 12Â h. The high efficiency as well as good durability demonstrates the PtNix electrocatalysts to be promising in practical applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 413, 15 August 2017, Pages 360-365
Journal: Applied Surface Science - Volume 413, 15 August 2017, Pages 360-365
نویسندگان
Jingjing Zheng,