کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
193145 459763 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nano-porous Si/C composites for anode material of lithium-ion batteries
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Nano-porous Si/C composites for anode material of lithium-ion batteries
چکیده انگلیسی

Nano-porous silicon composite incorporated with graphite and pyrolyzed carbon was synthesized and investigated as a promising anode material for lithium-ion batteries. The nano-porous Si/graphite composite was prepared via two-step ball-milling followed by etching process. Then carbon was incorporated by using different approaches. The nano-porous Si/graphite/C composite exhibits a reversible capacity of about 700 mAh/g with no capacity loss up to the 120th cycle at a constant current density of 0.2 mA/cm2. The superior electrochemical characteristics are attributed to the nanosized pores in Si particles, which suppress the volume effect, and buffering action as well as excellent electronic and ionic conductivity of carbon materials.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 52, Issue 19, 25 May 2007, Pages 5863–5867
نویسندگان
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