以化学还原法制备了SnSb0.18合金,并对合金的成分、组成及形貌等进行了分析;对合金的嵌脱锂性能研究发现,SnSb0.18合金能与锂形成多种合金,具有良好的嵌脱锂性能,首次循环的库仑效率为74.7%,放电容量可达到611mAh·g-1.研究中还发现热处理能有效地提高电极的循环寿命,增大放电容量,合金电极在氩气保护、300℃温度下处理2h,其40次循环之后比容量仍能保持在440 mAh·g-1.
参考文献
| [1] | LeeHY;JangSW;LeeSM et al.[J].Journal of Power Sources,2002,112:8-12. |
| [2] | Kim D G;Kim H;Sohn H J et al.[J].Journal of Power Sources,2002,104:221-225. |
| [3] | Mao O;Dahn J R .[J].Journal of the Electrochemical Society,1999,146(02):414-422. |
| [4] | Kim H.;Kim DG.;Sohn HJ.;Kang T.;Kim YJ. .Mechanochemical synthesis and electrochemical characteristics of Mg2Sn as an anode material for Li-ion batteries[J].Solid state ionics,2001(1/2):41-49. |
| [5] | Yang J.;Imanishi N.;Xie JY.;Yamamoto O.;Takeda Y. .Intermetallic SnSbx compounds for lithium insertion hosts[J].Solid state ionics,2000(3/4):189-194. |
| [6] | Larcher D;Beaulieu L Y;Mao O et al.[J].Journal of the Electrochemical Society,2000,147(05):1703-1708. |
| [7] | Huggins RA. .Lithium alloy negative electrodes formed from convertible oxides[J].Solid state ionics,1998(Special Issue SI):57-67. |
| [8] | Yang J;Wachtler M;Winter M;Besenhard J O .[J].Electrochemical and Solid-State Letters,1999,2(04):161-164. |
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%