کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1532256 | 1512023 | 2006 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of Ga doping on the structural, electrochemical and thermal properties of LiCo0.975Ga0.025O2 as cathode materials for lithium ion batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of Ga doping on the structural, electrochemical and thermal properties of LiCo0.975Ga0.025O2 as cathode materials for lithium ion batteries Effect of Ga doping on the structural, electrochemical and thermal properties of LiCo0.975Ga0.025O2 as cathode materials for lithium ion batteries](/preview/png/1532256.png)
چکیده انگلیسی
Layered LiCo0.975Ga0.025O2 was prepared by a sol-gel method and its structure, electrochemical and thermal properties were compared with those of LiCoO2 synthesized by the same method. The results showed that gallium doping improved the capacity retention of LiCoO2 while it lowered the initial discharge capacity. The improvement of capacity retention was prominent when the cycle tests were carried out at higher cut-off voltage and larger current rate. Cyclic voltammetry test indicated that the phase transition of LiCoO2 was suppressed by gallium doping. XRD of LixCo0.975Ga0.025O2 indicated that gallium doping brought about fewer changes in the c-axis during charge. Furthermore, the gallium doping also significantly enhanced the chemical diffusivity of Li+, suppressed the Co dissolution, limited the decomposition of electrolyte and improved the thermal stability of LiCoO2 during cycling.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: B - Volume 128, Issues 1â3, 15 March 2006, Pages 220-228
Journal: Materials Science and Engineering: B - Volume 128, Issues 1â3, 15 March 2006, Pages 220-228
نویسندگان
Dong-Ge Tong, Yong-Yue Luo, Yi He, Xiao-Yang Ji, Jian-Long Cao, Lian-Xing Tang, Ai-Dong Tang, Ke-Long Huang, Qiong-Yu Lai,