کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5462703 | 1517180 | 2017 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Different morphologies of MnO2 grown on the graphene@nickel foam electrode for supercapacitor application
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A binder-free 3D electrode of MnO2 arrays on graphene@nickel foam was successfully prepared via a two-step method. The nickel foam was first coated with a graphene sheet by chemical vapor deposition (CVD) and then decorated with MnO2 of different morphologies, ultrathin MnO2 nanosheets and ultralong MnO2 nanowires, by facile hydrothermal method. Due to the large specific surface area, high electronic conductivity and good capacitance of electrode materials, the obtained electrode exhibited rapid electron and ion transport, large electroactive surface area, and excellent structural stability. The electrode showed a high specific capacitance of 723Â FÂ cmâ2 at a high current density of 30Â mAÂ cmâ2 and a good cycling stability (with a negligible 2.4% decay in specific capacitances after 2300 cycles), promising its applications to high-performance supercapacitors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 208, 1 December 2017, Pages 102-106
Journal: Materials Letters - Volume 208, 1 December 2017, Pages 102-106
نویسندگان
Nguyen Van Hoa, Charmaine Lamiel, Nguyen Huu Nghia, Pham Anh Dat, Jae-Jin Shim,