کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6614276 | 459623 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrochemical characterization of novel layered Cu2MS4 materials for Li-ion batteries (MÂ =Â Mo)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Electrochemical performance of Cu2MoS4 was evaluated. When the cutoff potential is limited between 1.6 and 3.0 V, the material can give stable cycle performance of up to 100 mA h gâ1. However, the material shows slow kinetics within this region. The material can give a discharge capacity of up to 653 mA h gâ1 when discharged to 0.6 V vs. Li/Li+, with a first cycle efficiency of 61.3%. This corresponds to an insertion of 8.5 Li and an extraction of 5.2 Li from the material. XRD and XPS measurements both suggest Cu displacement from the material during discharge and charge, which is a possible reason for the poor cycle stability of the material. A reaction mechanism is proposed based on the XPS analysis. Better cycle performance is observed for Cu2MoS4/GO composite.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 115, 1 January 2014, Pages 337-343
Journal: Electrochimica Acta - Volume 115, 1 January 2014, Pages 337-343
نویسندگان
Denis Y.W. Yu, Rui Lin Lee, Ren Yi, Sing Yang Chiam, Phong D. Tran,