کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7733921 | 1497953 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
MoS2 coating on MoO3 nanobelts: A novel approach for a high specific charge electrode for rechargeable Li-ion batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The electrochemical properties of MoS2 coated MoO3 nanobelts in lithium-ion batteries were investigated. A thin layer of MoS2 was coated on the nanobelts of MoO3 successfully through a facile sulfur transfer method, and the X-ray synchrotron diffraction revealed the crystallographic features of this composite material. The specific charge of the coated sample was beyond 1100Â Ah/kg (at 1C rate) and 1400Â Ah/kg at C/10 rate when tested in the 0.05Â V-3.5Â V vs. Li+/Li range. It was found that, with coating the Coulombic efficiency was higher than 98% which indicates a highly reversible process. Additionally, the electrochemical reaction and the degradation mechanism were studied by in situ X-ray synchrotron diffraction (1st and 50th cycle), and by post mortem SEM analysis. Both revealed a structural degradation as well as a surface degradation of the electrode by means of a thick amorphous layer on the surface of the active material.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 279, 1 April 2015, Pages 636-644
Journal: Journal of Power Sources - Volume 279, 1 April 2015, Pages 636-644
نویسندگان
Claire Villevieille, Xiao-Jun Wang, Frank Krumeich, Reinhard Nesper, Petr Novák,