کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1623161 | 1516412 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and electrochemical properties of spinel LiCo1/6Mn11/6O4 powders by a spray-drying method
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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: Synthesis and electrochemical properties of spinel LiCo1/6Mn11/6O4 powders by a spray-drying method Synthesis and electrochemical properties of spinel LiCo1/6Mn11/6O4 powders by a spray-drying method](/preview/png/1623161.png)
چکیده انگلیسی
Co-substituted LiCo1/6Mn11/6O4 powders were prepared by a spray-drying method for positive electrodes of lithium ion batteries. The heat treating process, crystal structure and electrochemical properties of the synthesized materials were investigated by TG/DTG, DSC, XRD, SEM, slow rate cyclic voltammetry (CV) and galvanostatic charge/discharge cycling tests. The final powders were identified as single-phase spinel LiCo1/6Mn11/6O4 with high degree of crystallization and uniform particle size distribution. In the charge/discharge potential (versus Li/Li+) ranging from 2.0 to 4.4 V, the LiCo1/6Mn11/6O4 electrode delivered high initial discharge capacity of 242 mAh gâ1 at 1/10 C rate at 25 °C. In the potential range of 3.5-4.4 V, it showed high discharge capacity and excellent cycling performance at 1/5, 1/2, 1 C rate at 25 °C and 55 °C. The improvement in cycling performance might be contributed by the stabilization of spinel structure by smaller lattice constant when manganese ion was partially substituted by Co3+ ion. The spray-drying method is an effective method to prepare co-substituted lithium manganese oxide within very short production time, and thus is promising for commercial application.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 465, Issues 1â2, 6 October 2008, Pages 250-254
Journal: Journal of Alloys and Compounds - Volume 465, Issues 1â2, 6 October 2008, Pages 250-254
نویسندگان
W.K. Zhang, C. Wang, H. Huang, Y.P. Gan, H.M. Wu, J.P. Tu,