کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5432645 1508836 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Constructing optimized three-dimensional electrochemical interface in carbon nanofiber/carbon nanotube hierarchical composites for high-energy-density supercapacitors
ترجمه فارسی عنوان
ساختن رابط الکتروشیمیایی سه بعدی بهینه شده در کامپوزیت سلولهای نانولوله کربنی نانو فایبر / کربن برای ابررایانه های با تراکم انرژی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی

It is demonstrated that the performances of supercapacitors are often affected by the electrochemical interface in their electrodes. In this work, the electrochemical interface in carbon nanofiber (CNF)/carbon nanotube (CNT) hierarchical composites was well optimized by tuning the diameters of electrospun CNF skeletons and the densities/lengths of CNT hierarchies. The optimized CNF/CNT composites decorated with MnO2 exhibited high specific capacitance (∼631.0 F g−1 at current density of 0.9 A g−1) and excellent cycling stability (over 95% after 1500 cycles). Moreover, the assembled symmetric supercapacitors show a high flexibility and an excellent dynamic cycling stability, outputting the maximum energy density of 19.11 W h kg−1 and the maximum power density reaching 25,000 W kg−1. This research confirmed that the performances of the electrodes based on CNF/CNT hierarchical composites and their counterpart devices can be well tuned by tailoring their three-dimensional electrochemical interface.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbon - Volume 111, January 2017, Pages 502-512
نویسندگان
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