کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5150596 | 1498240 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Controlling Li2CuO2 single phase transition to preserve cathode capacity and cyclability in Li-ion batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Controlling Li2CuO2 single phase transition to preserve cathode capacity and cyclability in Li-ion batteries Controlling Li2CuO2 single phase transition to preserve cathode capacity and cyclability in Li-ion batteries](/preview/png/5150596.png)
چکیده انگلیسی
Li2CuO2 is synthesized via a solid-state reaction and its structure and microstructure is characterized using X-Ray Diffraction, Scanning Electron Microscopy and N2 adsorption-desorption isotherms. The capacity of cathode material is evaluated at different preparation conditions to determine the factors affecting charge retention, cyclability, and assuring reproducibility during electrode fabrication. Progressing from previous reports, a maximum capacity retention of 140 mAh gâ 1 is attained in the potential window from 1.5 to 4.2 V (Li/Li0) during ten cycles at C/15. The low capacity retention at extended cycling has been associated to the participation of irreversible oxygen redox process evaluated by theoretical calculations and cyclic voltammetry. These processes are minimized when the cycling potential window is confined from 2.0 to 3.8 V (Li/Li0), thus, achieving a higher capacity retention up to 100 mAh gâ 1 during 60 cycles. Cycling at higher C/rates lowers the capacity down (60 mAh gâ 1 at C/5), but the maximum capacity is restored when returning to C/15. Thus, making Li2CuO2 an attractive material either as active compound or additive in cathodes for Li-ion batteries, as a result of its intrinsic properties such as environmental benign, abundance, cost and straightforward preparation process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 303, May 2017, Pages 89-96
Journal: Solid State Ionics - Volume 303, May 2017, Pages 89-96
نویسندگان
G. Ramos-Sanchez, I.C. Romero-Ibarra, J. Vazquez-Arenas, C. Tapia, N. Aguilar-Eseiza, I. Gonzalez,