کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4907997 | 1426587 | 2017 | 31 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High-performance lithium-sulfur batteries with a carbonized bacterial cellulose/TiO2 modified separator
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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![عکس صفحه اول مقاله: High-performance lithium-sulfur batteries with a carbonized bacterial cellulose/TiO2 modified separator High-performance lithium-sulfur batteries with a carbonized bacterial cellulose/TiO2 modified separator](/preview/png/4907997.png)
چکیده انگلیسی
Lithium-sulfur (LiS) batteries have been considering as a very promising energy storage system since their high theoretical specific capacity and energy density. Nevertheless, the practical commercialization of LiS batteries is hindered by their poor cycle stability and fast capacity fading. Herein, a carbonized bacterial cellulose/titania (CBC/TiO2) modified separator is designed to restrain the shuttle effect of LiS cells with its strong physical and chemical adsorption of polysulfides. Cells with CBC/TiO2 modified separator show an initial discharge capacity of 1314 mAh gâ 1 at 0.2C, and the capacity retention is 1048.5 mAh gâ 1 after 50 cycles. A discharge capacity of 475 mAh gâ 1 is obtained after 250 cycles at 2C. And during the rate test, LiS cells can deliver a discharge capacity of 537.1 mAh gâ 1 at 2C. The outstanding electrochemical performance of LiS cells with CBC/TiO2 modified separator shows a new approach for the application of LiS batteries.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 788, 1 March 2017, Pages 150-155
Journal: Journal of Electroanalytical Chemistry - Volume 788, 1 March 2017, Pages 150-155
نویسندگان
Fanqun Li, Guanchao Wang, Peng Wang, Juan Yang, Kai Zhang, Yexiang Liu, Yanqing Lai,