کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1458703 989581 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ag nanoparticles anchored NiO/GO composites for enhanced capacitive performance
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Ag nanoparticles anchored NiO/GO composites for enhanced capacitive performance
چکیده انگلیسی

Hierarchical nickel oxide/graphene oxide (NiO/GO) and nickel oxide/graphene oxide/silver (NiO/GO/Ag) heterostructures were sucessfully fabricated as high-performance supercapacitors electrode materials by using a hydrothermal process and a photoreduction process. The experimental results showed that the NiO/GO/Ag heterostructure electrodes showed better electrochemical performance than those of NiO/GO and bare NiO nanosheets. The NiO/GO/Ag electrode exhibited a higher specific capacitance of 229 F g−1 at a current density of 1 A g−1, higher than that of 161 F g−1 for NiO/GO composites. Furthermore, NiO/GO/Ag electrode also showed good rate capability (still 200 F g−1 at 6 A g−1) and cycling stability (24% loss after 2000 repetitive cycles at a scan rate of 20 mV s−1). The enhanced capacitive performance of the NiO/GO/Ag composites was mainly attributed to the introduction of Ag nanoparticles, which increased the electrical conductivities of the composites, and promoted the electron transfer between the active components. This study suggested that NiO/GO/Ag composites were a promising class of electrode materials for high performance energy storage applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 42, Issue 11, 15 August 2016, Pages 12644–12650
نویسندگان
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