کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6614831 459626 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The mechanochemical synthesis of poly(3′,4′-ethylenedioxy-2,2′:5′,2″-terthiophene)/graphene nanoplatelet composites and the electrochemical performance
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
The mechanochemical synthesis of poly(3′,4′-ethylenedioxy-2,2′:5′,2″-terthiophene)/graphene nanoplatelet composites and the electrochemical performance
چکیده انگلیسی
The poly(3′,4′-ethylenedioxy-2,2′:5′,2″-terthiophene)/graphene nanoplatelet (poly(TET)/GNP) composites were synthesized by varying the ratio of GNP from 4 wt% to 16 wt% through mechanochemical method. The structure and morphology were characterized by the Raman spectroscopy, ultraviolet-visible (UV-vis) absorption spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDX). The electrochemical performances of the composites were investigated by galvanostatic charge/discharge measurement, cycling stability, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The results from Raman and UV-vis spectra showed that the composites were successfully synthesized, and the composites displayed a higher degree of conjugation than the pure poly(TET). The XRD and TEM results proved that the GNP existed in composites, and the ratio of GNP slightly affected the morphology of the poly(TET). The comparison results suggested that the composites showed a higher electrochemical activity than pure poly(TET). Moreover, all composites showed a lower internal resistance and better capacitive behavior than the poly(TET). Due to synergistic effects of GNP and poly(TET), the composite with 12 wt% GNP has better electrochemical activity than others. And, the specific capacitance of the composite with 12 wt% GNP reached to 206 F/g, and had a capacitance retention rate of 78% over 1000 cycles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 113, 15 December 2013, Pages 382-389
نویسندگان
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