以含0.46%～3.7%(质量分数)吡啶不溶物(PI)的宝钢煤焦油为原料,在450℃下自升压热缩聚制备中间相碳微球(MCMB),然后将其在700℃下进行碳化.应用SEM、恒电流充放电等技术研究了所得MCMB的表面物理形态及充放电性能.研究发现:随原料中一次PI含量的增加,MCMB的球径逐渐减小;首次电容量从326 mA@h@g-1增至425 mA@h@g-1,首次不可逆容量先增加而后减小,而首次充放电效率先减小而后增加.
参考文献
| [1] | 李宝华,吕永根,凌立成,刘朗,吴东.中间相炭微球用作锂离子电池阳极的充放电性能研究[J].新型炭材料,1999(04):28-33. |
| [2] | Mabuchi A.;Fujimoto H.;Kasuh T.;Tokumitsu K. .CHARGE-DISCHARGE CHARACTERISTICS OF THE MESOCARBON MICROBEADS HEAT-TREATED AT DIFFERENT TEMPERATURES[J].Journal of the Electrochemical Society,1995(4):1041-1046. |
| [3] | Chang Y C;Sohn H J .Electrochemical impedance analysis for lithium ion intercalation into graphited carbons[J].Journal of the Electrochemical Society,2000,147(01):50-58. |
| [4] | C. Kim;T. Fujino;K. Miyashita;T. Hayashi;M. Endo;M. S. Dresselhaus .Microstructure and electrochemical properties of boron-doped mesocarbon microbeads[J].Journal of the Electrochemical Society,2000(4):1257-1264. |
| [5] | C. Kim;T. Fujino;T. Hayashi;M. Endo;M. S. Dresselhaus .Structural and electrochemical properties of pristine and B-doped materials for the anode of Li-ion secondary batteries[J].Journal of the Electrochemical Society,2000(4):1265-1270. |
| [6] | 山口祥司 .In-situ electrochemical AFM observations of SEI film formation on graphite anode[J].Tanso,1999,186:39-44. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%