0 引言
1 实验部分
1.1 材料的合成
1.2 材料的表征
1.3 电池组装和电化学性能测试
2 结果与讨论
2.1 物相分析
Fig. 1 XRD patterns of TNO and TNOC materials图1 TNO和TNOC材料的XRD图 |
2.2 形貌及结构分析
Fig. 2 SEM images of TNO and TNOC materials at grinding process and calcination process: TNO (a) and TNOC (b) at grinding process; TNO (c) and TNOC (d) at spray dryer process; TNO (e) and TNOC(f) at calcination process图2 研磨后前驱体和高温煅烧后的TNO和TNOC材料SEM图:TNO(a)和TNOC(b)研磨后前驱体;喷雾干燥后TNO前驱体(c)和TNOC前驱体(d);煅烧后TNO(e)和TNOC(f) |
Fig. 3 Pore diameter distribution diagram of TNO and TNOC图3 TNO和TNOC孔径分布曲线图 |
2.3 电化学性能分析
Fig. 4 Initial charge/discharge curves for TNO and TNOC图4 TNO和TNOC材料的首次充放电曲线 |
Fig. 5 Discharge curves of TNO and TNOC at different rate图5 TNO和TNOC材料在不同倍率下的放电容量曲线 |
Fig. 6 Charge/discharge curves at different rates (a) and cycle performance curve at 1 C rate (b) for TNOC图6 TNOC材料在不同倍率下的充放电曲线(a)和1 C倍率下的循环性能曲线(b) |