کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6663746 | 463343 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrochemical properties of Si/LiTi2O4 nanocomposite as anode materials for Li-ion secondary batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Electrochemical properties of Si/LiTi2O4 nanocomposite as anode materials for Li-ion secondary batteries Electrochemical properties of Si/LiTi2O4 nanocomposite as anode materials for Li-ion secondary batteries](/preview/png/6663746.png)
چکیده انگلیسی
Si/LiTi2O4 nanocomposite film was synthesized by a sol-gel method in combination with a following heat-treatment process. Through this process, the nanosized Si particles were homogeneously distributed in the porous composite. The electrochemically less active LiTi2O4 working as a buffer matrix successfully prevented Si from cracking/crumbling during the charging/discharging process. The Si/LiTi2O4 nanocomposite exhibited a reversible lithium storage capacity of about 1100 mA h gâ1 with good cyclability, suggesting its promising nature in anode materials for Li ion batteries. A two-parallel diffusion path model fitted well with the impedance data of porous Si/LiTi2O4 composite at different potentials. The impedance in the low-frequency region was directly related to the diffusion of Li ions, and the Li ion diffusivity was on the order of 10â13 cm2 sâ1 based on the semi-infinite diffusion model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 616, Issues 1â2, 1 May 2008, Pages 7-13
Journal: Journal of Electroanalytical Chemistry - Volume 616, Issues 1â2, 1 May 2008, Pages 7-13
نویسندگان
Z.Y. Zeng, J.P. Tu, X.L. Wang, X.B. Zhao,