14487

13072

كارشناسي ارشد

شيمي تجزيه

اصفهان : دانشگاه صنعتي اصفهان

1397

سيزده، 61ص.: مصور، جدول، نمودار

1398/01/20

كتابنامه

شيمي

شيمي

1398/01/24

ID13072

62Synthesis of carbon nanotube spherical nickel selenide nickel sulfur composite and cupper cobalt selenide yolk shell hollow microsphere compound and investigation of their application in supercapacitors Farshad Tavakoli Email Farshad tavakoli@ch iut ac ir Department of Chemistry Isfahan University of Technology 84156 83111 Isfahan IranDegree M Sc Language PersianSupervisor Prof Behzad Rezaei rezaei@cc iut ac irAdvisor Prof A A Ensafi ensafi@cc iut ac irAbstractIn this study for the first time a new electrode of composite includes spherical nickel selenide nickel sulfur carbon nanotubes NiS2@NiSe2 CNT was synthesized and usedfor high performance supercapacitors in alkaline media The crystalline nature morphology and hollow interior of the microspheres were characterized by X raydiffraction XRD scanning electron microscope SEM transmission electronmicroscopy TEM techniques respectivly Electrochemical evaluation ofNiS2@NiSe2 CNT electrodes was performed by galvanostatic charge discharge cyclicvoltammetry CV and electrochemical impedance spectroscopy EIS This compositeshows a high specific capacitance 845 F g 1 at a current density of 1 A g 1 excellentgood rate capability and stability 91 after 1000 cycles In the second work the CuCo2Se4 yolk shelled hollow microspheres YS CCSe weresanthesized with a facile self templated method The YS CCSe properties were analysisby various technics such as energy dispersive x ray EDX XRD scanning electronmicroscopy SEM and TEM images The YS CCSe were examined as a high

بهزاد رضايي

علي اصغر انصافي

محمد تقي جعفري، محمد ژياني