کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5145729 | 1497361 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ni-MoS2 composite coatings as efficient hydrogen evolution reaction catalysts in alkaline solution
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
It remains an important project for the development of water splitting electrolyze to design and synthesis of more efficient non-noble metal catalyst. In this work, a structured Ni-MoS2 composite coating has been synthesized under supergravity fields with nickel sulphamate bath containing suspended MoS2 submicro-flakes. X-ray diffraction patterns indicate that the MoS2 submicro-flakes have been successfully incorporated into the Ni matrix. Additionally, SEM shows that the prepared Ni-MoS2 composite coatings display finer grain size than the pure Ni coatings, which can increase the electrochemistry surface area and the active site of hydrogen evolution reaction. Therefore, due to the synergistic effect of molybdenum disulfide and nickel, the Ni-MoS2 composite coatings are directly used as binder-free electrode, which exhibits outstanding electrocatalytic activity for HER in 1.0 M NaOH solution at room temperature. The Ni-MoS2 composite coatings demonstrated an outstanding performance toward the electrocatalytic hydrogen production with low overpotential (100 mA cmâ2 at η = 207 mV), a Tafel slope as small as 65 mV decâ1, and stable cycling performance (1200 cycles). The preeminent HER performance of this catalyst suggests that it may hold great promise for practical applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 16, 20 April 2017, Pages 11262-11269
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 16, 20 April 2017, Pages 11262-11269
نویسندگان
Xucai Yin, Haifeng Dong, Gang Sun, Wu Yang, Ailing Song, Qinghua Du, Li Su, Guangjie Shao,