کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1486958 1510695 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of hierarchical reduced graphene oxide/SnO2/polypyrrole ternary composites with high electrochemical performance
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Synthesis of hierarchical reduced graphene oxide/SnO2/polypyrrole ternary composites with high electrochemical performance
چکیده انگلیسی


• Reduced graphene oxide/SnO2/polypyrrole composites are prepared by one-pot method.
• PPy nanofibers and SnO2 nanoparticles distribute in the graphene nanosheets.
• The composites with hierarchical nanostructures show higher specific capacitance.
• The composites exhibit good rate capability and cycling stability.

The hierarchical reduced graphene oxide/SnO2/polypyrrole ternary composites are prepared in a one-pot method via in situ redox reaction between graphene oxide and Sn2+ ions, followed by the polymerization of pyrrole monomers in the presence of methyl orange. The ternary composites are composed of one-dimensional polyprrole nanofibers and SnO2 nanoparticles distributed in the network of graphene nanosheets. Supercapacitors based on the hierarchical composite show larger specific capacitance compared with the ternary composite prepared without methyl orange and reduced graphene oxide/SnO2 binary composite. They also exhibit superior electrochemical rate capability and cyclic stability. The capacitance retained about 95% after 800 galvanostatic cycles at 1 A/g. The high electrochemical performance results from the hierarchical nanostructure, the efficient combination of components and the synergistic interaction among the three components. The hierarchical ternary composites are promising electrode material for high-performance supercapacitors.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 80, August 2016, Pages 303–308
نویسندگان
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