کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7998382 | 1516249 | 2015 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of Nb doping on electrochemical properties of LiNi1/3Co1/3Mn1/3O2 at high cutoff voltage for lithium-ion battery
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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: Effect of Nb doping on electrochemical properties of LiNi1/3Co1/3Mn1/3O2 at high cutoff voltage for lithium-ion battery Effect of Nb doping on electrochemical properties of LiNi1/3Co1/3Mn1/3O2 at high cutoff voltage for lithium-ion battery](/preview/png/7998382.png)
چکیده انگلیسی
Nb doped cathode materials with the formula LiNi1/3Co1/3Mn1/3âxNbxO2 (x = 0, 0.01, 0.02, 0.03) have been prepared successfully by sol-gel method. The effect of Nb substitution on the crystal structure and electrochemical properties of LiNi1/3Co1/3Mn1/3O2 were studied systematically by X-ray diffraction (XRD) and various electrochemical measurements. The results showed Nb substitution played an important role in the good cycling performance of LiNi1/3Co1/3Mn1/3O2. Charge/discharge tests revealed that LiNi1/3Co1/3Mn1/3-0.02Nb0.02O2 showed a capacity retention of 94.1% at 1 C after 50 cycles in a high cutoff voltage range (3.0-4.6 V), while discharge capacity of LiNi1/3Co1/3Mn1/3O2 remains only 89.4% of that at 1 C. Ex-situ XRD analysis and EIS analysis indicated that the improved electrochemical properties of Nb-doped sample result from the more stable structure and lower resistance during the electrochemical cycling.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 644, 25 September 2015, Pages 223-227
Journal: Journal of Alloys and Compounds - Volume 644, 25 September 2015, Pages 223-227
نویسندگان
Jiefan Wu, Hongguang Liu, Xuehai Ye, Jiping Xia, Yang Lu, Chaowang Lin, Xiaowei Yu,