Polyaniline-based Symmetric solid-State supercapacitor
- سال انتشار: 1395
- محل انتشار: دوازدهمین سمینار سالانه الکتروشیمی ایران
- کد COI اختصاصی: ELECTROCHEMISTRY012_071
- زبان مقاله: انگلیسی
- تعداد مشاهده: 250
نویسندگان
Electrochemistry Research Laboratory, Department of Physical Chemistry, Chemistry Faculty, University of Tabriz,Tabriz, Iran,
Electrochemistry Research Laboratory, Department of Physical Chemistry, Chemistry Faculty, University of Tabriz,Tabriz, Iran,
چکیده
Supercapacitors, also known as ultracapacitors, are energy storage devices that can often be charged and discharged in seconds with extremely long cycle life [1, 2]. Supercapacitors are divided into two types: electrochemical double-layer capacitors (EDLCs) based on carbon electrodes that store and release energy by electrostatic charge separation at the electrode/electrolyte interface and pseudo-capacitors with certain metal oxides or conductingpolymers as the active electrode materials that associate with adsorption and surface redoxprocesses of the electroactive species [3]. Recently solid-state supercapacitors using a Nafion membrane as an electrolyte separator with the conductive composite electrodes have been studied [4]. In the present work, Nafion-based ionic polymer free metal nanocomposite (IPFMC) supercapacitor was fabricated. The suspension of graphene oxide/multiwalled carbon nanotube/PANI (GMP) was sprayed onto both sides of the Nafion membrane to complete the fabrication of the solid-state symmetric supercapacitor. Performance of the symmetric supercapacitor was investigated by Field emission scanning electron microscopy (FE-SEM) and Xray photoelectron spectroscopy (XPS). The electrochemical properties of symmetric solid-statesupercapacitor were investigated by cyclic voltammetry (CV), galvanostatic charge–discharge (CD) and electrochemical impedance spectroscopy (EIS) techniques in 0.5M Na2SO4. The specific capacitance of 383.25 F.g-1 (326 mF.cm-2) was obtained for the GMP in solid-state supercapacitorcell at a scan rate of 10 mV.s-1, respectively.کلیدواژه ها
Supercapacitor, Polyaniline, Nafion, Grapheme oxideمقالات مرتبط جدید
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