کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1608902 | 1516251 | 2015 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High-efficiency super capacitors based on hetero-structured α-MnO2 nanorods
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
Hetero-structured manganese dioxide nanorods with α phase (α-MnO2) were prepared by a facile hydrothermal route at low temperature. X-ray diffraction, scanning electron microscopy, transmission electron microscopy and nitrogen adsorption-desorption measurements were used to characterize the prepared hetero-structured α-MnO2 nanorods. Supercapacitive performance of the hetero-structured α-MnO2 nanomaterials as active electrode material was evaluated by cyclic voltammetry (CV) in alkaline medium. The MnO2 hetero-structure with 2 Ã 2 tunnels constructed from double chains of octahedral [MnO6] structure yield a significantly high specific capacitance of 298 Fgâ1 at 5 mV sâ1 and demonstrated a superior long term cyclic stability, with specific capacitance retention about 94% after 1000 cycles. The superior supercapacitive performance of the hetero-structured α-MnO2 electrode is due to its high specific surface area and unique hierarchy architecture which facilitate fast electron and ion transport.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 642, 5 September 2015, Pages 210-215
Journal: Journal of Alloys and Compounds - Volume 642, 5 September 2015, Pages 210-215
نویسندگان
Zafar Khan Ghouri, M. Shaheer Akhtar, Awan Zahoor, Nasser A.M. Barakat, Weidong Han, Mira Park, Bishweshwar Pant, Prem Singh Saud, Cho Hye Lee, Hak Yong Kim,