Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6601968 | Electrochimica Acta | 2018 | 23 Pages |
Abstract
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.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Chang-sheng An, Bao Zhang, Lin-bo Tang, Bin Xiao, Jun-chao Zheng,