کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
193072 459760 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrochemical behavior of carbon-coated SnS2 for use as the anode in lithium-ion batteries
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Electrochemical behavior of carbon-coated SnS2 for use as the anode in lithium-ion batteries
چکیده انگلیسی

Carbon-coated SnS2 nanoparticles were prepared by a simple solvothermal route at low temperature. A carbon coating with a thickness of about 5 nm was deposited on nano-sized SnS2 particles to serve as the anode in lithium-ion batteries. Both the nanostructure and the morphology of the SnS2 powders were characterized by X-ray diffraction (XRD), Raman spectroscopy, and transmission electron microscopy (TEM). The coated samples were used as active anode materials for lithium-ion batteries, and their electrochemical properties were examined by constant current charge–discharge cycling, cyclic voltammetry and electrochemical impedance spectroscopy. The reversible capacity of the carbon-coated SnS2 after 50 cycles was 668 mAh/g, which was much higher than that of the uncoated SnS2 (293 mAh/g). The carbon-coated SnS2 also had a better rate capability than the uncoated SnS2 in the range of 0.008–1 C. The capacity retention of the carbon-coated SnS2 was improved due to its good conductivity and the effective buffer matrix that alleviated volume expansion during the charge–discharge process.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 54, Issue 13, 1 May 2009, Pages 3606–3610
نویسندگان
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