کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6601968 | 1424074 | 2018 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ultrahigh rate and long-life nano-LiFePO4 cathode for Li-ion batteries
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
LiFePO4 is one of the most promising cathode materials for Li-ion batteries. However, its low electronic conductivity and slow Li-ion diffusion rate lead to poor electrochemical performance, especially poor rate performance. The hybrid of LiFePO4/Nitrogen and Sulfur co-doped graphene is successfully synthesized via a self-assembly method. Given its Nitrogen and Sulfur co-doped graphene matrix, the hybrid exerts a significantly impact on the electron conductivity of LiFePO4, resulting in excellent electrochemical properties and power density. The LiFePO4 composite has reversible capacity of 106.1â¯mAhg â1â¯at 10â¯C and 94.6â¯mAhgâ1at 15â¯C. Moreover, with less than 5% loss of discharge capacity after 500 cycles at 10â¯C, the Nitrogen and Sulfur co-doped graphene can effectively improve the electrochemical performance of LiFePO4.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 283, 1 September 2018, Pages 385-392
Journal: Electrochimica Acta - Volume 283, 1 September 2018, Pages 385-392
نویسندگان
Chang-sheng An, Bao Zhang, Lin-bo Tang, Bin Xiao, Jun-chao Zheng,