کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6613796 | 459615 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Highly dispersed copper nanoparticle modified nano Li4Ti5O12 with high rate performance for lithium ion battery
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
We report a simple strategy to prepare Li4Ti5O12/Cu nanoparticles as an anode material for high rate lithium ion batteries. The copper nanoparticles are highly dispersed on the surface of Li4Ti5O12 through hydrothermal process and a short post -annealing. X-ray diffraction, Field-emission scanning electron microscopy and transmission electron microscopy are performed to characterize their structures and morphologies. The cyclic voltammetry, galvanostatic charge/discharge and alternate current impedance are used to evaluate their electric performance. Compared to pure Li4Ti5O12, the Li4Ti5O12/Cu composites has high rate capability, capacity retention and excellent cycling performance. The results show that copper nanoparticles enhance the electric conductivity of Li4Ti5O12/Cu, and prevent agglomeration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 120, 20 February 2014, Pages 226-230
Journal: Electrochimica Acta - Volume 120, 20 February 2014, Pages 226-230
نویسندگان
Chongling Cheng, Hongjiang Liu, Xin Xue, Hui Cao, Liyi Shi,