کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7727518 | 1497907 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The role of SnO2 surface coating in the electrochemical performance of Li1.2Mn0.54Co0.13Ni0.13O2 cathode materials
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The role of SnO2 surface coating in the electrochemical performance of Li1.2Mn0.54Co0.13Ni0.13O2 cathode materials The role of SnO2 surface coating in the electrochemical performance of Li1.2Mn0.54Co0.13Ni0.13O2 cathode materials](/preview/png/7727518.png)
چکیده انگلیسی
The manganese metal ions and other transition metal ions in lithium manganite cathode materials will be dissolved into the electrolyte during cycling and storage at charged state, leading to severe capacity fading. Herein, the SnO2-coated Li1.2Mn0.54Co0.13Ni0.13O2 cathode material is prepared successfully by a simple organic liquid-phase method. The data of inductive coupled plasma-atomic emission spectroscopy and ex-XRD suggest that the coating layer can effectively suppress the dissolution of metal ions, which maintains the stability of main structure. The value of the charge transfer impedance is 35.49 Ω cm2 for LLMO-Sn1 after 50 cycles, while the LLMO is 123.30 Ω cm2. The LLMO-Sn1 has the highest discharge capacity of 214.0 mAh·gâ1 after 150 cycles in half cell and exhibits the capacity retention of 86.8% after 150 cycles in full-cell. The decomposition reaction peak of LLMO-Sn1 appears at 250.1 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 325, 1 September 2016, Pages 84-90
Journal: Journal of Power Sources - Volume 325, 1 September 2016, Pages 84-90
نویسندگان
Bing Li, Jing Wang, Zulai Cao, Peng Zhang, Jinbao Zhao,