کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
54042 46994 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Co3S4/NCNTs: A catalyst for oxygen evolution reaction
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Co3S4/NCNTs: A catalyst for oxygen evolution reaction
چکیده انگلیسی


• Co3S4/NCNTs was prepared through Co(OH)2/NCNTs, ion-exchange and partial oxidation.
• Co3S4/NCNTs show good dispersion and better OER activity than pure Co3S4 and NCNTs.
• Co3S4/NCNTs with TAA as sulfur source and 20 wt% loading shows optimum OER activity.

Nitrogen-doped carbon nanotubes (NCNTs) immobilized cobaltic sulfide (Co3S4/NCNTs) was prepared by the first formation of Co(OH)2/NCNTs and the subsequent anion-exchange of S2− with OH-, accompanied with the partial oxidation of Co2+. The morphology and microstructure of the prepared Co3S4/NCNTs nanocomposite were characterized by TEM, SEM, XRD and XPS. The electrochemical properties of Co3S4/NCNTs nanocomposite for oxygen evolution reaction (OER) were evaluated by polarization curves and cyclic voltammetry (CV). The results show that Co3S4/NCNTs composite exhibits excellent performance for OER with potential of 0.65 V vs. SCE, corresponding to over-potential of 0.43 V at the current of 10 mA cm−2 in 0.1 M KOH electrolyte, being a promising OER electrocatalyst.

Figure optionsDownload high-quality image (120 K)Download as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 245, 1 May 2015, Pages 74–78
نویسندگان
, , , , ,