کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7727016 | 1497905 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Highly-flexible 3D Li2S/graphene cathode for high-performance lithium sulfur batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Three-dimensional Li2S/graphene hierarchical architecture (3DLG) is synthesized with a facile infiltration method. Highly-crystalline Li2S nanoparticles are deposited homogenously into three-dimensional graphene foam (3DGF) network grown by chemical vapor deposition (CVD), resulting in 3DLG with high surface area, porosity, flexibility and conductivity. The 3DLG is employed as flexible, free-standing and binder-free cathode without metallic current collectors or conducting additives. Due to the unique structure, the 3DLG exhibits a high discharge capacity of 894.7Â mAh gâ1 at 0.1Â C, a high capacity retention of 87.7% after 300 cycles at 0.2Â C, and the high-rate capacity up to 4Â C reaches 598.6Â mAh gâ1. The cyclic performance is record-breaking compared to the previous reports on free-standing graphene-Li2S cathodes. Flexible lithium-sulfur batteries based on the high-capacity 3DLG cathode have promising application potentials in flexible electronics, electrical vehicles, etc.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 327, 30 September 2016, Pages 474-480
Journal: Journal of Power Sources - Volume 327, 30 September 2016, Pages 474-480
نویسندگان
Jiarui He, Yuanfu Chen, Weiqiang Lv, Kechun Wen, Pingjian Li, Fei Qi, Zegao Wang, Wanli Zhang, Yanrong Li, Wu Qin, Weidong He,