کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
185624 459599 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pulse electrochemical incorporation of graphene oxide into polypyrrole films for supercapacitor electrode materials
ترجمه فارسی عنوان
ترکیب الکتروشیمیایی پالس اکسید گرافین به فیلم پلیپیرلل برای مواد الکترودهای سوپراسپاتور
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• A Polypyrrole/Graphene oxide composite is electro-polymerized with pulse currents.
• The effects of pulse current parameters on the capacitance are remarkable.
• The composite exhibits a high specific capacitance and good stability.

In order to synthesize a PPy/GO composite for supercapacitor applications, a pulse electro-polymerization method was proposed to direct incorporate graphene oxide (GO) into polypyrrole (PPy) films without any additional dopants. The PPy/GO prepared by the pulse electro-polymerization (PC PPy/GO) exhibits a higher specific capacitance. A shorter pulse on time (ton) results in higher specific capacitance, but there is an optimum pulse current amplitude (IA) related to the highest specific capacitance. The PC PPy/GO film (IA = 4 mA cm−2, ton = 50 ms) has a high specific capacitance of 660 F g−1 estimated from galvanostatic charge-discharge in 1 M KCl at a current density of 0.5 mA cm−2. Stability tests for the PPy/GO yield long cycling life up to 1000 cycles with 10% decay in specific capacitance at charge-discharge current density of 10 mA cm−2 in the potential range of -0.5 to 0.5 VSCE.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 137, 10 August 2014, Pages 685–692
نویسندگان
, , ,