کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7833169 | 1503518 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Facile synthesis of Fe-doped Co9S8 nano-microspheres grown on nickel foam for efficient oxygen evolution reaction
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Cobalt sulfides have drawn enormous attention as earth-abundant alternatives to precious-metal electrocatalysts capable of catalyzing oxygen evolution reaction (OER) in alkaline medium. Although significant progresses have been realized in the development of various composite modulation to improve their properties for oxygen evolution, to boost their poor catalytic activity for oxygen evolution reaction is still challenging, which unambiguously limits the wide utilization of cobalt sulfides. Here, we present the facile growth of metal-doping (Fe, Ni) into Co9S8 supported on nickle foam (NF) through a one-step simple hydrothermal process. The effect of (Fe, Ni)-doping on the morphology and the catalytic activity of Co9S8 has been thoroughly investigated. Fe-Co9S8 nano-microspheres supported on NF (Fe-Co9S8 NM/NF) have been obtained with the remarkable electrocatalytic activity, which only requires a lower overpotential of 270â¯mV to reach a current density of 10â¯mAâ¯cmâ2 and exhibits the smaller Tafel slope of 70â¯mV decâ1 as well as robust stability. The excellent OER performance of Fe-Co9S8 NM/NF could be attributed to the synergistic interaction of Fe dopants with Co9S8 nano-microspheres and faster charge transfer rate derived from NF support. This work provides a new and effective way to design metal-doped Co9S8-based heterostructures supported on conductive support as efficient OER electrocatalysts.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 454, 1 October 2018, Pages 46-53
Journal: Applied Surface Science - Volume 454, 1 October 2018, Pages 46-53
نویسندگان
Wen-Kun Gao, Jun-Feng Qin, Kai Wang, Kai-Li Yan, Zi-Zhang Liu, Jia-Hui Lin, Yong-Ming Chai, Chen-Guang Liu, Bin Dong,