中间相炭微球(MCMBs)是一种性能优异的锂离子电池阳极用炭材料.研究了经不同温度热处理的MCMBs的微观结构与充放电性能的相关性.经700℃～1 000℃炭化热处理的MCMBs,随着热处理温度的提高其充放电性能变好,而经1 700℃～2 800℃热处理的MCMBs的充放电性能变化与此相反.经700℃热处理的MCMB的放电容量为425 mAh/g,超过了石墨的理论容量376 mAh/g,这是由于其内部的微孔起到了锂离子储存"仓库"的作用.
参考文献
| [1] | Pled E;Menzchem C;BarTow D et al.Improved graphite anode for lithium-ion batteries[J].Journal of the Electrochemical Society,1996,143(01):4-7. |
| [2] | Imhof R;Novak P .In stiu-investigation of the electrochemical reaction of carbonate electrolyte solutions at graphite electrodes[J].Journal of the Electrochemical Society,1998,145(04):1081-1087. |
| [3] | Masashi Ishikawa;Hideaki Kamohara;Masayuki Morita;Yoshiharu Matsuda .Li(CF_3SO_2)_2N as an electrolytic salt for rechargeable lithium batteries with graphitized mesocarbon microbeads anodes[J].Journal of Power Sources,1996(2):229-232. |
| [4] | 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. |
| [5] | E. Buiel;J. R. Dahn .Reduction of the irreversible capacity in hard-carbon anode materials prepared from sucrose for Li-ion batteries[J].Journal of the Electrochemical Society,1998(6):1977-1981. |
| [6] | Sato K;Noguchi M;Demachi A et al.A meschanism of lithium storage in disordered carbons[J].Science,1994,263:264,556-558. |
| [7] | LU Yong-gen;LING Li-cheng;Liu Lang et al.Preparation of high density isotropic carbon solid from mesocarbon microbeads[J].新型炭材料,1998,13(03):12-20. |
| [8] | Yamaguchi S .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%