کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5349647 | 1503644 | 2014 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fabrication and characterization of carbon nanofiber@mesoporous carbon core-shell composite for the Li-air battery
ترجمه فارسی عنوان
ساخت و ویژگی کربن نانوفیبری کربن مرکب کربنی مسی پوروس برای باتری لیتیوم-هوا
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
چکیده انگلیسی
In this study, we successfully design and synthesize the mesoporous carbon coated carbon nanofibers (CNF@mesoCs) for the Li-air battery. The composites are fabricated via electrospinning technique and nanocasting strategy. After mesoporous carbon coating process, the composites have retained their original one-dimensional structure as pristine carbon nanofibers. Every nanofiber entangles with each other to form a three-dimensional cross-linked web structure. Because of the mesoporous carbon coating on carbon nanofibers, the surface area increases from 708 m2 gâ1 to 2194 m2 gâ1. We confirm that the mesoporous carbon coated on carbon nanofibers is well-graphitized by analysis of Raman spectra. The graphitized surface of CNF@mesoCs (4.638 S cmâ1) is believed to result in their higher electrical conductivity than that of pristine carbon nanofibers (3.0759 S cmâ1). Without employment of any binders and metal foams, the cathode of CNF@mesoCs exhibits high discharge capacity of 4000 mA h gâ1, which is much higher than that from pristine carbon nanofibers (2750 mA h gâ1). This work demonstrates that the fabricated CNF@mesoCs structures have a great potential to be employed as light-weight and efficient electrode for energy storage and conversion devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 320, 30 November 2014, Pages 435-440
Journal: Applied Surface Science - Volume 320, 30 November 2014, Pages 435-440
نویسندگان
Myeong Jun Song, Moo Whan Shin,