کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4766851 | 1424114 | 2017 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
One-step electrochemical preparation of graphene-coated pencil graphite electrodes by cyclic voltammetry and their application in vanadium redox batteries
ترجمه فارسی عنوان
آماده سازی الکتروشیمیایی یک مرحله ای از الکترودهای گرافیتی گرافن با گرافیت با استفاده از ولتامتری چرخشی و کاربرد آنها در باطری های وداید بازود
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کلمات کلیدی
گرافن، الکترود گرافیت مداد، ولتامتری سیسیک، باطری ردوکس وانادیم، الکترود گرافن،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
In this study, a novel technique was investigated for the one-step production of graphene layers on a pencil graphite electrode. To the best of our knowledge, this report is the first to describe the formation of graphene layers on a graphite electrode using cyclic voltammetry in 5.0Â M nitric acid solution. The oxidation of the pencil graphite electrode occurred at the anode. Next, the formed graphene oxide was reduced to graphene over one cycle. The electrochemical characteristics and behaviors of the produced graphene electrodes were investigated by cyclic voltammetry. Physical and morphological characteristics and differences in the electrodes were determined by Raman, XPS and SEM analysis. The graphene electrodes were used as the positive electrode component of a vanadium redox battery. GPGE (the graphene electrode synthesized over 50 cycles in 5Â M HNO3) had the best performance as a positive electrode in a vanadium redox battery. Moreover, GPGE exhibited great cyclic performance and excellent cycling stability (more than 200 cycles) in cyclic voltammetry. It has been demonstrated that the presented novel processing route is fast, easy, cheap and environmentally friendly for preparation of graphene electrodes which can be used in energy storage systems, sensors, and optoelectronics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 243, 20 July 2017, Pages 239-249
Journal: Electrochimica Acta - Volume 243, 20 July 2017, Pages 239-249
نویسندگان
Hürmüs Gürsu, Metin Gençten, Yücel Åahin,