کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1610840 | 1516285 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation of mesohollow and microporous carbon nanofiber and its application in cathode material for lithium-sulfur batteries
ترجمه فارسی عنوان
آماده سازی نانوفیبری کربن مایع و کربن مایع و کاربرد آن در مواد کاتدی برای باتری های لیتیوم گوگرد
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
چکیده انگلیسی
Mesohollow and microporous carbon nanofibers (MhMpCFs) were prepared by a coaxial electrospinning with polyacrylonitrile (PAN) and polymethylmethacrylate (PMMA) as outer and inner spinning solutions followed by a carbonization. The carbon fibers were thermal treated with sublimed sulfur to form S/MhMpCFs composite, which was used as cathode material for lithium-sulfur batteries. Electrochemical study shows that the S/MhMpCFs cathode material provides a maximum capacity of 815Â mAÂ h/g after several cycles of activation, and the capacity retains 715Â mAÂ h/g after 70Â cycles, corresponding to a retention of 88%. The electrochemical property of the S/MhMpCFs composite is much superior than the S-incorporated solid carbon fibers prepared from electrospinning of single PAN. The mechanism of the enhanced electrochemical property of the S/MhMpCFs composite is discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 608, 25 September 2014, Pages 220-228
Journal: Journal of Alloys and Compounds - Volume 608, 25 September 2014, Pages 220-228
نویسندگان
Yuanhe Wu, Mingxia Gao, Xiang Li, Yongfeng Liu, Hongge Pan,