کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7993941 | 1516155 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A facile structure design of LiNi0.90Co0.07Al0.03O2 as advanced cathode materials for lithium ion batteries via carbonation decomposition of NaAl(OH)4 solution
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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: A facile structure design of LiNi0.90Co0.07Al0.03O2 as advanced cathode materials for lithium ion batteries via carbonation decomposition of NaAl(OH)4 solution A facile structure design of LiNi0.90Co0.07Al0.03O2 as advanced cathode materials for lithium ion batteries via carbonation decomposition of NaAl(OH)4 solution](/preview/png/7993941.png)
چکیده انگلیسی
High-powered, LiAlO2 homogeneously coated LiNi0.90Co0.07Al0.03O2 (ACLNCAO) has been successfully synthesized by using a novel technique. A new design of Al(OH)3 precipitation is applied via CO2 decomposition of NaAl(OH)4 solution, a classical method has been used in aluminium oxide metallurgy, which enables to plant Al(OH)3 on Ni0.928Co0.072 (OH)2 precursors uniformly and efficiently. Experimental results from structure, morphology and composition analysis technologies demonstrate that an Al(OH)3 layer is uniformly coated on the nickel-cobalt hydroxide precursor, and a γ-LiAlO2 shell coated on the Ni-based cathode material. The Li+ storage properties of as-prepared samples are characterized by electrochemical tests, transmission electron microscope (TEM) differential scanning calorimetry (DSC) and metallic nail penetration tests. The γ-LiAlO2 modified material displays a high discharge capacity of â¼224 mAh gâ1 at 0.2C and 205.8 mAh gâ1 at 1C rate at 25 °C and shows good capacity retention of 93.4% after 100 cycles, which is better than Al homogeneously doped LiNi0.90Co0.07Al0.03O2 (HLNCAO). Furthermore, ACLNCAO shows an upgraded thermal stability, which benefit from the LiAlO2 based surface prevent the high powered core from being attacked by electrolyte under high voltage state.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 739, 30 March 2018, Pages 335-344
Journal: Journal of Alloys and Compounds - Volume 739, 30 March 2018, Pages 335-344
نویسندگان
Jianguo Duan, Peng Dong, Ding Wang, Xue Li, Zhengwei Xiao, Yingjie Zhang, Guorong Hu,