کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6614959 | 459626 | 2013 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spherical nano-SnSb/MCMB/carbon core-shell composite for high stability lithium ion battery anodes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
A novel multi-step design of spherical nano-SnSb/MCMB/carbon core-shell composite for high stability and long life lithium battery electrodes has been introduced. The core-shell composite was successfully synthesized via co-precipitation and subsequent pyrolysis. The resultant composite sphere consisted of nanosized SnSb alloy and mesophase carbon microbeads (MCMB, 10 μm) embedded in a carbon matrix pyrolyzed from glucose and petroleum pitch, in which the MCMB was treated to be the inner core to offer mechanical support and efficient electron conducting pathway. The composite material exhibited a unique stability with a retention discharge capacity rate of 83.52% with reversible capacity of 422.5 mAh gâ1 after 100 cycles and a high initial coulombic efficiency of 83.53%. The enhanced electrochemical performance is attributed to the structural stability of the composite sphere during the charging-discharging process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 113, 15 December 2013, Pages 505-513
Journal: Electrochimica Acta - Volume 113, 15 December 2013, Pages 505-513
نویسندگان
Juan Li, Qiang Ru, Shejun Hu, Dawei Sun, Beibei Zhang, Xianhua Hou,