کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10568425 | 973425 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Carbon-coated Ni20Si80 alloy-graphite composite as an anode material for lithium-ion batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
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چکیده انگلیسی
A carbon-coated Ni20Si80 alloy-graphite composite has been studied as the anode for lithium-ion batteries. The composite is prepared by simple heat-treatment of a mixture of coal tar pitch and a Ni20Si80-graphite composite at 900 °C and under argon. The Ni20Si80 alloy powders are synthesized by mechanical alloying. The composite demonstrates promising electrochemical properties such as high reversible capacity, excellent cycle performance, and sufficiently high initial charge-discharge coulombic efficiency. This suggests buffering and conductive actions on the main active material, viz., Ni20Si80 alloy, of the graphite. These two effects are strongly enhanced by the carbon coating treatment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 141, Issue 1, 16 February 2005, Pages 159-162
Journal: Journal of Power Sources - Volume 141, Issue 1, 16 February 2005, Pages 159-162
نویسندگان
Heon-Yong Lee, Young-Lae Kim, Moon-Ki Hong, Sung-Man Lee,