کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1525985 1511846 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improvement of cycle performance for silicon/carbon composite used as anode for lithium ion batteries
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Improvement of cycle performance for silicon/carbon composite used as anode for lithium ion batteries
چکیده انگلیسی

The silicon/carbon composite was prepared by mixing the silicon, graphite and pitch in the tetra-hydrofuran solution followed by pyrolyzing the blends after the evaporation of solvent. The electrochemical performance of the silicon/carbon anode for lithium ion batteries was improved by the treatment of composite powders with KCl aqueous solutions. Scanning electron microscope (SEM) observation and electrochemical impedance spectroscopy (EIS) results showed that the morphology stability of the composite electrodes can be kept during the electrochemical charge/discharge process. The composite electrode of silicon/carbon composite showed an initial reversible capacity of 575 mAh g−1 and still maintained a high reversible capacity of 506 mAh g−1 after 40 cycles with the capacity loss of ∼0.3% per cycle.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 115, Issues 2–3, 15 June 2009, Pages 757–760
نویسندگان
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