کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6614027 | 459623 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evaluation and performance improvement of Si/SiOx/C based composite as anode material for lithium ion batteries
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
The structure and electrochemical performances of Si/SiOx/C (SSC) and graphite-SSC composite (G-SSC) are evaluated in half cells and full cells as anode materials for lithium ion batteries. It is found that the SSC material shows a lithium storage capacity of 3 to 5 times higher than that of pure graphite while the G-SSC composite exhibits a desirable cycling stability (+80%@400cycles). Structural characterization reveals no particle cracks in the G-SSC composite. The Si particle is surrounded with lithium silicates, which provide protection against the electrolyte invasion and electrolyte decomposition but permits the Li+ ions to pass through. The graphite coating layer, on the other hand, acts as an electric conductive connector and volume buffer. These structural features make the SSC and G-SSC attractive as anode materials for high-performance commercial lithium ion batteries.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 115, 1 January 2014, Pages 16-21
Journal: Electrochimica Acta - Volume 115, 1 January 2014, Pages 16-21
نویسندگان
Qingfeng Yuan, Fenggang Zhao, Yanming Zhao, Zhiyong Liang, Danlin Yan,