رشد نانوساختارهای نیکل کبالت رشد نانوساختارهای نیکل کبالت سولفید بر روی فوم نیکل به منظور کاربرد در ابرخازن با کارایی بالاسولفید بر روی فوم نیکل به منظور کاربرد در ابرخازن با کارایی بالا

نویسندگان

دانشگاه الزهرا - گروه شیمی

چکیده

در این پژوهش، نانوساختارهای نیکل کبالت سولفید NiCo2S4 با روش رسوب گذاری حمام شیمیایی بر روی فوم نیکل رشد داده شد تا در نهایت به عنوان الکترود ابرخازن NF/NiCo2S4 با کارایی بالا مورد استفاده قرار گیرد. پس از مشخصه یابی و تعیین مورفولوژی نمونه ها با میکروسکوپ الکترونی روبشی SEM، رفتار ابرخازنی نمونه‌های ساخته شده با تکنیک ‌های مختلف الکتروشیمیایی نظیر ولتامتری چرخ‍ه‌‍ای CV، شارژ و دشارژ گالوانوستایی GCD و طیف سنجی امپدانس الکتروشیمیایی EIS مورد مطالعه و بررسی قرار گرفت. میزان ذخیره ی بار برای الکترود ابرخازن NF/NiCo2S4 در محلول KOH با غلظت M 0/1 برابر با mF cm-2 303 در چگالی جریان mA cm-2 0/1 بدست‌ آمد. با بررسی نمودار EIS، مقاومت در برابر انتقال الکترون Rct برابر با Ω 5/5 به دست آمد که نشان می دهد الکترود مبتنی بر نانوساختار سولفیدی سنتز شده دارای سرعت انتقال الکترون بالایی است.

کلیدواژه‌ها


عنوان مقاله [English]

Growth ofNiCo2S4nanostructuresonnickelfoamforitsapplicationashighperformancesupercapacitorelectrode

نویسندگان [English]

  • Omran Moradlou
  • Hanieh Sharifpour
چکیده [English]

In this work, NiCo2S4 nanostructures were grown on nickel foam by using chemical bath deposition CBD method for the costruction of high performance supercapacitor electrode. The morphology of the samples was characterized with scanning electron microscopy SEM and the supercapacitive behaviour of the electrode was investigated by various electrochemical techniques including cyclic viltammetry CV, galvanostatic charge-discharge GCD and electrochemical impedance spectroscopy EIS. The fabricated electrode provided a specific capacitance of 303 mF cm-2 at 1 mA cm-2 in 1.0 M KOH. Electron transfer resistance Rct of the electrode was studied by EIS and obtained to be 5.5 Ω. The electrochemical performance parameters of the fabricated electrode showed that the proposed metal sulfide-based composite is an appropriate electrode for the supercapacitor applications.
 


کلیدواژه‌ها [English]

  • Nickel cobalt sulfide
  • nanoplates
  • Supercapacitor
  • nickel foam
  • charge transfer rate
  • charge-discharge
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