کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10225188 1701161 2018 29 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Carbon fibers surface-grown with helical carbon nanotubes and polyaniline for high-performance electrode materials and flexible supercapacitors
ترجمه فارسی عنوان
الیاف کربن سطح با نانولوله های کربنی هلیکوپی و پلیانیلین برای مواد الکترود با کارایی بالا و ابررایانه های انعطاف پذیر
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
Carbon fiber-based flexible supercapacitors have attracted wide attention due to their excellent properties. In this paper, a novel high performance flexible supercapacitor is reported. The carbon fibers surface-grown with helical carbon nanotubes (CF-HCNTs) are prepared using chemical vapor deposition and then combined with PANI by in-situ polymerization to form a 3D porous structure. The carbon fibers surface-grown with helical carbon nanotubes and polyaniline (CF-HCNTs-PANI) flexible supercapacitor electrodes exhibit a high capacitance of 660 F/g at a current density of 1 A/g with good cycling stability (90.4% capacitance retention after 1000 charge/discharge cycles) and low interfacial charge-transfer resistance of 0.5 Ω. These excellent electrochemical performances are attributed to faradic pseudocapacity, large surface area, 3D porous structure of the CF-HCNTs-PANI electrodes and unique multi-scale fibrous materials. Furthermore, the all-solid-state CF-HCNTs-PANI flexible supercapacitor shows a good specific capacitance of 439 F/g at a current density of 0.05 A/g and has excellent deformation stability. Its electrochemical performance does not cause obvious effect after bending and twisting (95.4% capacitance retention after 500 bending/recovery cycles and near no change after twisting). The CF-HCNTs-PANI electrode with the unique nanostructure will play an important role in the preparation of flexible supercapacitors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 828, 1 November 2018, Pages 24-32
نویسندگان
, , ,