采用Raman光谱、TEM和恒流充放电技术研究在石油醚介质中球磨不同时间的多壁碳纳米管的结构、形貌和电化学嵌锂行为的变化.结果发现,球磨1h和5h,多壁碳纳米管的典型Raman峰强度随球磨时间的增加而降低,说明碳纳米管中的缺陷增多,管径变小,管长变短;但球磨5h和10h的峰强度相差不大,说明在石油醚介质中经一定时间球磨后再延长时间对其结构几乎无影响;且球磨前后Raman谱G线和D线的强度之比几乎不变,球磨对其石墨化程度影响不大.随球磨时间增加,可逆嵌锂容量相应增加.并分析了原因.
参考文献
| [1] | LiNC;Martin C R .Ahigh-rate,high-capacity,nanostructruedSn-basedanodepreparedusingsol-geltemplatesynthesis[J].Journal of the Electrochemical Society,2001,148(02):A164. |
| [2] | J.Read;D.Foster;J.Wolfenstine .SnO_2-carbon composites for lithium-ion battery anodes[J].Journal of Power Sources,2001(2):277-281. |
| [3] | XieJ;Zhao X B;Cao G S et al.Ex-situ XRD studies of CoSb3 compound as the anode materials for lithium ion batteries[J].Journal of Electroanalytical Chemistry,2003,542:1. |
| [4] | John E.Fischer .Chemical doping of single-wall carbon nanotubes[J].Accounts of Chemical Research,2002(12):1079-1086. |
| [5] | EesenTW;Ajayan P M .Large-scale synthesis of carbon nanotubes[J].Nature,1992,358:220. |
| [6] | ChangHL;Lin C H;Kuo C T.Field emission,structure,cathodluminescence and formation studies of carbon and Si-C-N nanotubes[M].Diamond and Related Materials,2002:793. |
| [7] | FrackowiakE;Beguin F .Electrochemical storage of energy in carbon nanotubes and nanostructured carbons[J].Carbon,2002,40:1775. |
| [8] | Gao B.;Lorentzen JD.;Fleming L.;Kleinhammes A.;Tang XP. McNeil LE.;Wu Y.;Zhou O.;Bower C. .Enhanced saturation lithium composition in ball-milled single-walled carbon nanotubes[J].Chemical Physics Letters,2000(1/2):69-75. |
| [9] | Eklund PC.;Jishi RA.;Holden JM. .VIBRATIONAL MODES OF CARBON NANOTUBES - SPECTROSCOPY AND THEORY[J].Carbon: An International Journal Sponsored by the American Carbon Society,1995(7):959-972. |
| [10] | acsaWS;DeHeer W A;Ugarte D et al.Raman spectroscopy of closed-shell carbon particles[J].Chemical Physics Letters,1993,211:346. |
| [11] | Maurin G.;Henn F.;Bernier P.;Almairac R.;Simon B.;Bousquet C. .Electrochemical lithium intercalation into multiwall carbon nanotubes: a micro-Raman study[J].Solid state ionics,2000(Special Issue SI):1295-1299. |
| [12] | T. S. Ong;H. Yang .Lithium Intercalation into Mechanically Milled Natural Graphite[J].Journal of the Electrochemical Society,2002(1):A1-A8. |
| [13] | WuYP;Fang S B;Jiang Y Y .Thereversibleandhighstoredmechanismforlithiuminsertionincarbonaceousmaterials[J].Chemistry-A European Journal,1998,4:15. |
| [14] | MiCH;Cao G S;Zhao X B .Anon-GICmechanismoflithiumstorageinchemicaletchedMWNTs[J].Journal of Electroanalytical Chemistry,2004,562:217. |
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%