0 引言
1 实验部分
1.1 多孔碳的制备
1.2 硫正极的制备
1.3 硫正极的测试
2 结果与讨论
2.1 PC的电导率、形貌及孔结构表征
Fig. 1 SEM images (a, b) and TEM images (c, d) for PC图1 PC的SEM图片(a、b)以及TEM图片(c、d) |
Fig. 2 The nitrogen adsorption/desorption isotherms and the DFT pore-size distribution curve for PC图2 PC基于氮气的吸脱附曲线及基于DFT的孔径分布曲线 |
2.2 基于不同导电添加剂极片形貌表征
Fig. 3 SEM images for sulfur electrodes with various weight percentages of PC {figure 3(a) was originated from reference [4]}图3 添加不同比例PC的硫正极极片的SEM图片{图3(a)来源于文献β[4]} |
2.3 硫正极的电化学性能
Fig. 4 Electrochemical performance of all the electrodes with various additives of PC: (a) cycling performance at 0.2 C; (b) voltage profiles of all the electrodes after 100 cycles; (c) rate capability from 0.1 C to 1 C; (d) voltage profiles of the electrodes with 2.5%PC at various current rates; (e) cycling performance of all the electrodes at 1 C图4 添加不同比例PC的硫正极极片的电化学性能:(a)在0.2 C下的循环性能;(b)循环100圈后硫正极的容量电压曲线;(c)从0.1 C到1 C的倍率性能;(d)2.5%PC在不同倍率下的放电容量-电压曲线对比;(e)不同极片在1 C下的循环性能 |