کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1283709 | 1497921 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
NaxLi0.7âxNi1âyMnyO2 as a new positive electrode material for lithium-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: NaxLi0.7âxNi1âyMnyO2 as a new positive electrode material for lithium-ion batteries NaxLi0.7âxNi1âyMnyO2 as a new positive electrode material for lithium-ion batteries](/preview/png/1283709.png)
چکیده انگلیسی
In this study, a new class of contenders for high-voltage and high-capacity positive electrode materials with the composition NaxLi0.7âxNi1âyMnyO2 (0.03 < x â¤Â 0.25, 0.5 â¤Â y â¤Â 0.8) was synthesized by thermal treatment; these positive electrode materials synthesized by Na+/Li+ exchange using P3Na0.7Ni1âyMnyO2 (0.5 â¤Â y â¤Â 0.8) as the precursor exhibited a mixture of layered and spinel structures. The (dis)charge voltage-capacity curve of materials with these compositions significantly varied according to the residual Na and Mn content. Notably, HT-NaxLi0.7âxNi1âyMnyO2 (x = 0.093, y = 0.67) exhibited a maximum discharge capacity of 261 mA h gâ1 at an average voltage of 3.36 V at 25 °C (between 2.0 and 4.8 V), which translates to an energy density of 943 W h kgâ1. The obtained electrochemical performance is rationalized by the phase fractions of layered and spinel structures, which is triggered by the residual Na and Mn content in NaxLi0.7âxNi1âyMnyO2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 311, 15 April 2016, Pages 103-110
Journal: Journal of Power Sources - Volume 311, 15 April 2016, Pages 103-110
نویسندگان
Kazuki Chiba, Noboru Taguchi, Masahiro Shikano, Hikari Sakaebe,