کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10624225 | 989585 | 2016 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Simple self-assembly of SnS2 entrapped graphene aerogel and its enhanced lithium storage performance
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
In this work, SnS2 nanoplates entrapped graphene aerogel has been successfully prepared by simple self-assembly of reduced graphene oxide obtained through mild chemical reduction. Structural and morphological investigations demonstrated that SnS2 nanoplates are highly dispersed in the three dimensional (3D) porous graphene matrix. When served as anode material for lithium-ion batteries, the electrochemical properties of SnS2/graphene aerogel (SnS2/GA) were evaluated by galvanostatic discharge-charge tests, cyclic voltammetry and impedance spectroscopy measurement. Compared with pristine SnS2, the SnS2/GA nanocomposite achieved a much higher initial reversible capacity (1186 mAh gâ1), superior cyclic stability (1004 mAh gâ1 after 60 cycles, corresponding to 84.7% of the initial reversible capacity), as well as better rate capability (650 mAh gâ1 at a current density of 1000 mA gâ1). This significantly improved lithium storage performance can be attributed to the good integration of SnS2 nanoplates with 3D porous graphene network, which can not only provide much more active sites and easy access for Li ions intercalation, but also prevent the aggregation of SnS2 nanoplates and facilitate fast transportation of Li ions and surface electrons during the electrochemical process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 42, Issue 6, 1 May 2016, Pages 6572-6580
Journal: Ceramics International - Volume 42, Issue 6, 1 May 2016, Pages 6572-6580
نویسندگان
Hongli Tang, Xiang Qi, Zhen Zhang, Guanjie Ai, Yundan Liu, Zongyu Huang, Jianxin Zhong,