کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7728058 | 1497908 | 2016 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Low-cost flexible supercapacitors based on laser reduced graphene oxide supported on polyethylene terephthalate substrate
ترجمه فارسی عنوان
بر پایه لیزر ارزان قیمت، سوپراسپتورهای انعطاف پذیر، اکسید گرافین بر پایه پلی اتیلن ترفتالات
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
A controlled high powered CO2 laser system is used to reduce and pattern graphene oxide (GO) film supported onto a flexible polyethylene terephthalate (PET) substrate. The laser reduced graphene oxide (rGO) film is characterized and evaluated electrochemically in the absence and presence of an overlying anodicaly deposited thin film of pseuodcapactive MnO2 as electrodes for supercapacitor applications using aqueous electrolyte. The laser treatment of the GO film leads to an overlapped structure of defective multi-layer rGO sheets with an electrical conductivity of 273 S mâ1. The rGO and MnO2/rGO electrodes exhibit specific capacitance in the range of 82-107 and 172-368 Fgâ1 at applied current range of 0.1-1.0 mA cmâ2 and retain 98 and 95% of their initial capacitances after 2000 cycles at a current density of 1.0 mA cmâ2, respectively. Also, the rGO is assigned as an electrode material for flexible conventionally stacked and interdigitated in-plane supercapacitor structures using gel electrolyte. Three electrode architectures of 2, 4, and 6 sub-electrodes are studied for the interdigital in-plane design. The device with interdigital 6 sub-electrodes architecture I-PS(6) delivers power density of 537.1 Wcmâ3 and an energy density of 0.45 mWh cmâ3.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 324, 30 August 2016, Pages 272-281
Journal: Journal of Power Sources - Volume 324, 30 August 2016, Pages 272-281
نویسندگان
Engy Ghoniem, Shinsuke Mori, Ahmed Abdel-Moniem,