کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7991493 | 1516141 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Carbon-coated SbCu alloy nanoparticles for high performance lithium storage
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Carbon-coated SbCu alloy nanoparticles for high performance lithium storage Carbon-coated SbCu alloy nanoparticles for high performance lithium storage](/preview/png/7991493.png)
چکیده انگلیسی
In this study, carbon-coated SbCu alloy nanoparticles are synthesized via a facile preparation route in high-boiling point solvent. The structure and morphology of carbon-coated SbCu nanoparticles are characterized by scanning electron microscopy, transmission electron microscopy, elemental analysis, X-ray diffraction and Raman spectroscopy, revealing that the obtained particles are composed of intermetallic Cu2Sb and Sb nanocrystallites coated with amorphous carbon. The core shell SbCu/C nanoparticles exhibits excellent performance when employed as anode. The first discharge capacity is 751â¯mAh gâ1 and the initial coulomb efficiency is as high as 71.4%. Capacity fading is very small after 150 lithiation/delithiation cycles, retaining a stable reversible capacity of â¼477â¯mAh gâ1. Moreover, it has a remarkable capacity retention of 87% at a current charge rate of 1C, which is far superior to large size carbon-coated SbCu particles and pure Sb particles prepared under different conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 753, 15 July 2018, Pages 371-377
Journal: Journal of Alloys and Compounds - Volume 753, 15 July 2018, Pages 371-377
نویسندگان
Yang He, Wanting Sun,