高容量氟掺杂碳包覆纳米硅负极材料: 气相氟化法制备及其储锂性能
苏楠1(
), 邱介山1,3(), 王治宇1,2()
), 邱介山1,3(), 王治宇1,2()
F-doped Carbon Coated Nano-Si Anode with High Capacity: Preparation by Gaseous Fluorination and Performance for Lithium Storage
SU Nan1(), QIU Jieshan1,3(), WANG Zhiyu1,2()
), QIU Jieshan1,3(), WANG Zhiyu1,2()
图5. Si@C和Si@C-F负极(a)在电流密度为0.4 A·g-1时的循环性能(先在0.2 A·g-1电流密度下活化4圈); (b)在电流密度0.2~5.0 A·g−1范围的倍率性能; (c)在电流密度为0.2 A·g-1时的长循环容量保持率
Fig. 5. (a) Cycling stability at a current density of 0.4 A·g-1 with anodes activated by 4 cycles at 0.2 A·g-1 before cycling, and (b) rate capability at various current densities ranging from 0.2 to 5.0 A·g−1 and (c) capacity retention at a current density of 0.2 A·g-1 for lithium storage in Si@C and Si@C-F anode
Colorful figures are available on website
