کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6611156 | 459559 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Solid-state synthesis and electrochemical performance of Ce-doped Li4Ti5O12 anode materials for lithium-ion 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: Solid-state synthesis and electrochemical performance of Ce-doped Li4Ti5O12 anode materials for lithium-ion batteries Solid-state synthesis and electrochemical performance of Ce-doped Li4Ti5O12 anode materials for lithium-ion batteries](/preview/png/6611156.png)
چکیده انگلیسی
Ce-doped Li4Ti5O12 anode materials are prepared via a solid state reaction. The Ce is designed to replace of Ti (Li4Ti5âxCexO12) or take the place of octahedral interstice (Li4Ti5CexO12). The structure and morphology of these materials are characterized and their electrochemical performance is investigated. The structure analysis results show that it is difficult for Ce to dope into the lattice of Li4Ti5O12, only few Ce can dope in the lattice of Li4Ti5O12 and CeO2 impurity is inevitable in Ce-doped Li4Ti5O12 materials. As we designed, Li4Ti5Ce0.1O12 with Ce interstitial doping has the bigger lattice volume than Li4Ti4.9Ce0.1O12 with Ce substitution doping and pristine Li4Ti5O12. As for the electrochemical performance, Li4Ti5Ce0.1O12 delivers the highest capacity at 0.2 C (over 170 mAh gâ1) and best rate performance among the pristine and Ce-doped Li4Ti5O12 materials. Ac impedance results show that the impedance of Li4Ti5Ce0.1O12 is much less than the other samples, which is the main reason for the best electrochemical performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 174, 20 August 2015, Pages 369-375
Journal: Electrochimica Acta - Volume 174, 20 August 2015, Pages 369-375
نویسندگان
T.P. Zhou, X.Y. Feng, X. Guo, W.W. Wu, S. Cheng, H.F. Xiang,