کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8946873 | 1645539 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Superior lithium storage of Si/WSi2 composite prepared via one step co-reduction of multi-phase oxide
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Superior lithium storage of Si/WSi2 composite prepared via one step co-reduction of multi-phase oxide Superior lithium storage of Si/WSi2 composite prepared via one step co-reduction of multi-phase oxide](/preview/png/8946873.png)
چکیده انگلیسی
To address the huge volume changes and unstable solid-electrolyte interface (SEI) layer during lithiation/delithiation of silicon, this paper proposes a novel 'silicon alloy' concept that is achieved by proposing the synthesis of Si/WSi2 via a magnesiothermic co-reduction. The WSi2 is formed by absorbing the heat generated from magnesiothermic co-reduction, which increases the conductivity and acts as the mechanical backbone to buffer the volume change. Thereby, Si/WSi2 displays a superior specific charge capacity of 2678â¯mAhâ¯gâ1 at the current density of 100â¯mAâ¯gâ1 as an anode material, with the capacity retention of 84% after 40â¯cycles. Moreover, it shows excellent rate capability of 997â¯mAhâ¯gâ1 at the current density of 10â¯Aâ¯gâ1 and excellent cycling performance up to 100â¯cycles at the current density of 1â¯Aâ¯gâ1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 826, 1 October 2018, Pages 84-89
Journal: Journal of Electroanalytical Chemistry - Volume 826, 1 October 2018, Pages 84-89
نویسندگان
Weijia Peng, Huajun Guo, Zhixing Wang, Xinhai Li, Jiexi Wang, Guochun Yan, Yu Zhou,