کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7991004 | 1516132 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High-performance Li1.2Mn0.6Ni0.2O2 cathode materials prepared through a facile one-pot co-precipitation process for lithium ion batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: High-performance Li1.2Mn0.6Ni0.2O2 cathode materials prepared through a facile one-pot co-precipitation process for lithium ion batteries High-performance Li1.2Mn0.6Ni0.2O2 cathode materials prepared through a facile one-pot co-precipitation process for lithium ion batteries](/preview/png/7991004.png)
چکیده انگلیسی
In a quest to produce cathode materials for lithium ion batteries that yield high capacities, the Li1.2Mn0.6Ni0.2O2, lithium-manganese rich cathode materials were synthesized via a facile one-pot co-precipitation process with various ratios of urea at pH 9.0, 9.5, 10.0 and 10.5. The physical properties of the cathode materials were analysed by X-ray diffraction, Brunauer-Emmett-Teller surface area, scanning electron microscopy, transmission electron microscopy, inductively coupled plasma mass spectrometry and energy dispersive spectroscopy. The X-ray diffraction study showed that the prepared materials were crystalline with an ordered layered structure in the respective unit cell parameters being indexed to a monoclinic C2/c space group. Scanning electron microscopy showed that Li1.2Mn0.6Ni0.2O2 particles are agglomerated, however pH 10.0 particles appear less agglomerated and possess a slightly higher surface area. The cathode materials were built into coin cells and displayed exceptional electrochemical performance in delivering more than 200â¯mAh gâ1 at a constant current density of 20â¯mAâ¯gâ1 in the voltage range of 2.0 V-4.8â¯V. In particular the cathode material made at pH 10.0 delivered an initial high discharge capacity of 266â¯mAh gâ1 at 20â¯mAâ¯gâ1 current density and maintained a discharge capacity of more than 220â¯mAh gâ1 at 50â¯mAâ¯gâ1 after 50 cycles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 762, 25 September 2018, Pages 272-281
Journal: Journal of Alloys and Compounds - Volume 762, 25 September 2018, Pages 272-281
نویسندگان
Nomasonto Rapulenyane, Ernst Ferg, Hongze Luo,