کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4767755 | 1424141 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrothermal Synthesis of SnO2 Embedded MoO3-x Nanocomposites and Their Synergistic Effects on Lithium Storage
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Hydrothermal Synthesis of SnO2 Embedded MoO3-x Nanocomposites and Their Synergistic Effects on Lithium Storage Hydrothermal Synthesis of SnO2 Embedded MoO3-x Nanocomposites and Their Synergistic Effects on Lithium Storage](/preview/png/4767755.png)
چکیده انگلیسی
We demonstrate a facile hydrothermal synthesis of SnO2/MoO3-x nanocomposites with ultrafine SnO2 crystallites uniformly embedded into an amorphous MoO3-x matrix, which demonstrate superior electrochemical performance as anodes for lithium ion batteries, including long-term cycling stability (953 mA h/g after 100 cycles at 200 mA/g), high rate capability (668.0 mA h/g after 1000 cycles at 1000 mA/g) and high initial Coulombic efficiency (81.3% at 200 mA/g). Synergistic effects of the both components SnO2 and MoO3-x on the lithium storage are revealed by electrochemical characterization and supported by TEM and XPS analysis performed at the different discharge/charge states of the respective electrodes. SnO2 nanocrystallites confined within the amorphous MoO3-x matrix efficiently buffer the volume changes of Li-Sn alloying-dealloying upon cycling, while the metallic Mo in situ generated by a conversion reaction of MoO3-x promotes the reversible reaction SnO2 + Li+ â Sn + Li2O. In addition, the amorphous MoO3-x with bulk or surface defects allows for a better lithium insertion and thus enhanced capacity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 216, 20 October 2016, Pages 79-87
Journal: Electrochimica Acta - Volume 216, 20 October 2016, Pages 79-87
نویسندگان
Daxian Cao, Hongkang Wang, Beibei Li, Chao Li, Sanmu Xie, Andrey L. Rogach, Chunming Niu,