کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6616732 | 459629 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High-performance porous nanoscaled LiMn2O4 prepared by polymer-assisted sol-gel method
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: High-performance porous nanoscaled LiMn2O4 prepared by polymer-assisted sol-gel method High-performance porous nanoscaled LiMn2O4 prepared by polymer-assisted sol-gel method](/preview/png/6616732.png)
چکیده انگلیسی
Porous nanoscaled LiMn2O4 sample has been successfully prepared by a polymer-assisted sol-gel method. The porous structure is composed of nanoparticles ranging from 50 to 100 nm. The as-obtained LiMn2O4 exhibits specific capacity of 131 mAh gâ1 at 0.5C and 105 mAh gâ1 even at 20C. At 2C, the capacity retention reaches 73.3% after 1000 cycles at room temperature and 77.3% after 100 cycles at 60 °C. Such outstanding rate capability and cyclic performance can be ascribed to the unique porous nanoscaled structure. Short Li-ion diffusion path and high diffusion coefficient lead to the superior rate capability. The improved cyclic performance originates from low Mn dissolution and accommodation to the structural distortion provided by the porous structure during cycling.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 106, 1 September 2013, Pages 63-68
Journal: Electrochimica Acta - Volume 106, 1 September 2013, Pages 63-68
نویسندگان
Ze Yang, Yan Jiang, Heng-Hui Xu, Yun-Hui Huang,