کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7740313 | 1497989 | 2013 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sodium substitution for partial lithium to significantly enhance the cycling stability of Li2MnO3 cathode material
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Sodium substitution for partial lithium to significantly enhance the cycling stability of Li2MnO3 cathode material Sodium substitution for partial lithium to significantly enhance the cycling stability of Li2MnO3 cathode material](/preview/png/7740313.png)
چکیده انگلیسی
Monoclinic layered Li2MnO3 has been extensively investigated due to its large discharge capacity. However, the poor cycling stability hinders its application as a cathode material of lithium-ion batteries. Herein we present a new strategy of sodium substitution for partial lithium to significantly enhance the cycling stability of Li2MnO3 through a conventional solid state reaction. In the electrochemical window of 2.0-4.6 V vs. Li/Li+, Li1.90Na0.10MnO3 delivers an initial discharge capacity of 181 mAh gâ1 with an excellent capacity retention of 99.3% after 45 cycles at 1/10 C, and 161 mAh gâ1 with a capacity retention of 98.6% after 100 cycles at 1/2 C. Sodium substitution for partial lithium is promising to make Li2MnO3 be practically applied at a low current density.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 243, 1 December 2013, Pages 78-87
Journal: Journal of Power Sources - Volume 243, 1 December 2013, Pages 78-87
نویسندگان
Xin Dong, Youlong Xu, Lilong Xiong, Xiaofei Sun, Zhengwei Zhang,