کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6609319 | 459545 | 2016 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An efficient NiS@N/S-C hybrid oxygen evolution electrocatalyst derived from metal-organic framework
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Exploring earth-abundant oxygen evolution electrocatalysts is a challenge for cost-effective production of hydrogen from water splitting and fuel cells. Herein, the NiS@N/S-C nanocomposites composed of NiS particles embedded in N/S co-doped carbon substrate were synthesized by carbonization of metal-organic framework (MOF) of the Ni (II) complex with vanillic thiosemicarbazone. The MOF-derived NiS@N/S-C hybrids exhibited excellent electrochemical performance for oxygen evolution reaction (OER) in alkaline solution, yielding a low onset potential of 1.54Â V (vs. the reversible hydrogen electrode), and the potential only changed 10Â mV after chronopotentionmetric response at 10Â mAÂ cmâ2 for 10Â h. The resulted high OER activity and strong stability of hybrids was derived from the active NiS nanostructure characteristic and the well-dispersed NiS nanoparticles encapsulated in carbon substrate formed in situ, the strong interaction between NiS particles and substrate species, as well as co-doping effect of N/S atoms on substrates. Our work gave a new method to prepare catalysts and demonstrated that NiS@N/S-C nanocomposite was a promising non-precious catalyst for water splitting.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 191, 10 February 2016, Pages 813-820
Journal: Electrochimica Acta - Volume 191, 10 February 2016, Pages 813-820
نویسندگان
Liu Yang, Minggang Gao, Bin Dai, Xuhong Guo, Zhiyong Liu, Banghua Peng,