کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11006457 | 1503512 | 2018 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation of SnO2@rGO/CNTs/S composite and application for lithium-sulfur battery cathode material
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this paper, SnO2 was introduced in to suppress the “shuttle effect” of lithium-sulfur battery for its efficient adsorption for lithium polysulfides, and a three-dimensional conductive network constructed by reduced graphene oxide (rGO) and carbon nanotubes (CNTs) was used to improve the composite conductivity and mechanical properties. Thus, a SnO2@rGO/CNTs/S composite was prepared to use as the lithium-sulfur battery cathode material. The obtained samples were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, high-resolution transmission electron microscopy and thermogravimetric analysis. The electrochemical performance was characterized by cyclic voltammogram, constant current chargeâdischarge, rate performance, cycle life and electrochemical impedance spectroscopy after being assembled into lithium-sulfur battery. The results show that the obtained composite has a promising electrochemical performance: the initial discharge capacity is 1205.4â¯mAhâ¯gâ1 at 0.1C and there is a reversible capacity of 958.6â¯mAhâ¯gâ1 after 50 cycles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 462, 31 December 2018, Pages 393-398
Journal: Applied Surface Science - Volume 462, 31 December 2018, Pages 393-398
نویسندگان
Qingqing Liu, Qi Jiang, Li Jiang, Junqi Peng, Yike Gao, Zhihong Duan, Xiaoying Lu,