کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7705305 | 1497294 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ni and N co-doped MoCx as efficient electrocatalysts for hydrogen evolution reaction at all-pH values
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
To achieve sustainable production of H2 fuel through water splitting, noble-metal-free catalysts have been extensively studied for hydrogen evolution reaction (HER), especially molybdenum-based catalysts. Herein, we report the Ni, N-codoped MoCx (Ni-N-MoCx) nanoparticles synthesized from NiMoO4 precursor by oily-solvent-assisted strategy, following the calcination with dicyandiamide. As-obtained Ni-N-MoCx in different magnified SEM images shows grainy structure, MoCx nanoparticles uniformly disperse in carbon substrate. The obtained electrocatalysts can also efficiently electrocatalytic HER in a wide pH value. Ni-N-MoCx shows an onset potential of â74Â mV, an overpotential of 163Â mV to reach a current density of 10Â mA/cm2 in acid media, an onset potential of â37Â mV and overpotential of 124Â mV to reach 10Â mA/cm2 in alkaline media. The present study provides some guidelines for preparing the uniformly doped electrocatalysts from multiple compounds with devolatilization characteristics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 31, 2 August 2018, Pages 14301-14309
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 31, 2 August 2018, Pages 14301-14309
نویسندگان
Jie Chen, Jin Jia, Zhaoqian Wei, Guixiang Li, Jiayuan Yu, Linjing Yang, Tanli Xiong, Weijia Zhou, Qingxiao Tong,