کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10268993 | 459698 | 2011 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microwave-assisted synthesis of SnS2/SnO2 composites by l-cysteine and their electrochemical performances when used as anode materials of Li-ion batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
SnS2/SnO2 composites were prepared in a microwave-assisted reaction of a mixture solution of SnCl4 and l-cysteine and were characterised by XRD, TEM, SEM and EDX. The influence of the mole ratio of SnCl4 to l-cysteine (l-cys) on the sample was investigated. It was found that using a microwave method, SnS2/SnO2 composites were formed, and SnS2/SnO2 nanoparticles were obtained when the mole ratio of SnCl4 to l-cysteine was 1:2. With higher contents of l-cys, when the mole ratio of SnCl4 to l-cys was 1:4, the products were nanosheets instead of nanoparticles. Electrochemical tests demonstrated that the SnS2/SnO2 composites with layer structure exhibited high reversible capacities and good cycling performances when used as anode materials of Li-ion batteries. When the mole ratio of SnCl4 to l-cys was 1:6, the initial reversible capacity of products was 593Â mAh/g, and the retention capacity that was maintained was over 88%. Besides, the retention capacity of products was still excellent at high current charge/discharge.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 56, Issue 7, 28 February 2011, Pages 2856-2861
Journal: Electrochimica Acta - Volume 56, Issue 7, 28 February 2011, Pages 2856-2861
نویسندگان
Kun Chang, Wei-xiang Chen, He Li, Hui Li,