کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6610271 459551 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High-performance aqueous asymmetric supercapacitor based on spinel LiMn2O4 and nitrogen-doped graphene/porous carbon composite
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
High-performance aqueous asymmetric supercapacitor based on spinel LiMn2O4 and nitrogen-doped graphene/porous carbon composite
چکیده انگلیسی
Spinel LiMn2O4 has been prepared by a facile hydrothermal procedure and the prepared LiMn2O4 exhibits superior electrochemical performance, such as high specific capacitance (409 F g−1 at 2 mV s−1) and excellent rate capability (85% retention at 100 mV s−1). In order to achieve high energy and power densities, a high-voltage asymmetric supercapacitor (ASC) is successfully assembled using the as-prepared LiMn2O4 as the positive electrode and nitrogen-doped graphene/porous carbon composite as the negative electrode in a Li2SO4 aqueous electrolyte. The optimized ASC delivers a high specific energy of up to 44.3 Wh kg−1 at a specific power of 595 W kg−1 with an output voltage of 1.8 V based on the total weight of the active electrode materials. This novel strategy provides a promising route to design high-performance supercapacitors with high energy density for next-generation storage systems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 180, 20 October 2015, Pages 287-294
نویسندگان
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