کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8002762 | 1516314 | 2013 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In situ synthesis of CoS2/RGO nanocomposites with enhanced electrode performance for lithium-ion batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: In situ synthesis of CoS2/RGO nanocomposites with enhanced electrode performance for lithium-ion batteries In situ synthesis of CoS2/RGO nanocomposites with enhanced electrode performance for lithium-ion batteries](/preview/png/8002762.png)
چکیده انگلیسی
This study reports a novel strategy of preparing CoS2/reduced graphene oxides (RGO) nanocomposites by employing graphene oxides (GO) as an oxidizing agent and Na2S2O3 as a reducing agent. CoS2 can be in situ synthesized with GO being reduced. X-ray diffraction (XRD), Raman spectrometry, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and electrochemical test are used to characterize the nanocomposite. The CoS2 particles with the size of 150Â nm are dispersed in the networks made from thin RGO nanosheets. The CoS2/RGO nanocomposite as an anode material for lithium-ion batteries can deliver excellent reversible capacity retention (640Â mAÂ hgâ1) after cycling 50 times when tested at 100Â mAÂ gâ1 and rate performance. The enhanced electrochemical properties can be attributed to the nanoscale particles sizes of CoS2 in addition to the effects of RGO networks in preventing the agglomeration of CoS2 and absorbing lithium polysulfides during the charge-discharge processes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 579, 5 December 2013, Pages 372-376
Journal: Journal of Alloys and Compounds - Volume 579, 5 December 2013, Pages 372-376
نویسندگان
Bin Qiu, Xiuyun Zhao, Dingguo Xia,