کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5352942 1503575 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High capacitive performance of hollow activated carbon fibers derived from willow catkins
ترجمه فارسی عنوان
عملکرد خازنی بالا از فیبر کربن فعال توخالی مشتق شده از گیاهان بیدانه
کلمات کلیدی
مخزن سوپر گربه های وحشی فعال سازی هیدروکسید پتاسیم، الیاف کربن فعال توخالی،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی


- Hollow activated carbon fibers (HACFs) are prepared from biomass waste willow catkins.
- The HACFs possess high microporous specific surface area(1067 m2 g−1) with concentrated pore size distribution and rich heteroatom-doped functional groups.
- The HACFs-based electrode exhibit excellent electrochemical properties of high specific capacitance, considerable rate capability and high energy density.

In this paper, we prepared three different kinds of hollow activated carbon fibers (HACFs) from willow catkins (WCs), phenolic- and pitch-based hollow fibers, respectively. The morphology, pore structure, surface chemical composition and electrochemical properties of these hollow fibers were studied in parallel. Due to its high-hollow, cost-effective as well as eco-friendly nature, HACFs derived from WCs can be served as excellent electrode materials for electrochemical energy storage devices. Electrochemical measurements illustrate that the WCs derived HACFs exhibit not only high specific capacitance of 333 F g−1 at 0.1 A g−1 but also considerable rate capability with a retention of 62.7% (209 F g−1 at 10 A g−1). Symmetric supercapacitor devices that using WCs derived HACFs as electrodes deliver a maximum energy density of ∼8.8 Wh kg−1 at power density of 50 W kg−1 and good cycling performance with 95.5% retention over 3000 cycles at 5 A g−1 in 6 M KOH aqueous electrolytes.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 394, 1 February 2017, Pages 569-577
نویسندگان
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