采用循环伏安法在不锈钢上电化学制备碳纳米管/聚苯胺(CNTs/PANI)复合材料,并研究了不同扫速下(10、20、50、100、200mV/s)碳纳米管/聚苯胺复合材料的电化学性能.研究结果表明,复合材料中由于CNTs自身的大比表面积和强的导电率改善了复合物微观结构和导电性能,并且使聚苯胺更易电沉积到CNTs的表面形成核-壳结构,从而增加聚苯胺与电解液的接触机会.并且在扫速为20mV/s时生成的聚苯胺/碳纳米管膜具有导电率高,比容量大的电容性能,在 22A/m~2的电流密度下充放电测试,测其单电极比容量高达 397F/g,远高于纯聚苯胺的比容量205F/g.
Cyclic voltammetry (CV) was used to deposit carbon nanotube/polyaniline (CNTs/PANI) composite materials with different scanning rate.And the electrochemical performances of the obtained materials were studied with 10,20,50,100 and 200mV/s scanning rates.The results showed that the micro-structure and conductivity of composite materials was enhanced by the carbon nanotubes (CNTs) large surface area and excellent conductivity.At the same time,the obtained material was the nuclear - shell structure,which was good for enhancing the chances of material and the electrolyte.When the scanning rate was 20mV/s,the obtained composite had the best conductivity and electrochemical capacitance.The single-electrode special capacitance was up to 397F/g with the 22A/m~2 charging-discharging current density,which was much greater than that of the pure polyaniline (about 205F/g).
参考文献
| [1] | Laforgue A;Simon P;Sarrazin C et al.[J].Journal of Power Sources,1999,80:142-148. |
| [2] | Kotz R;Carlen M .[J].Electrochimica Acta,2000,45:2483-2498. |
| [3] | Huggins RA. .Supercapacitors and electrochemical pulse sources[J].Solid state ionics,2000(1/2):179-195. |
| [4] | Frackowiak E;Beguin F .[J].Carbon,2002,40:1775-1787. |
| [5] | Park B O;Lokhande C D;Park H S et al.[J].Journal of Power Sources,2004,134(01):148-152. |
| [6] | Chol C S;Park B J;Chol H J .[J].Current Applied Physics,2007,7:352-355. |
| [7] | Pillalamarri S K;Blum F D;Tokuhiro A T et al.[J].Chemistry of Materials,2005,17:5941-5944. |
| [8] | Ghosh P;Siddhanta S K;Chakrabarti A .[J].European Polymer Journal,1999,35:699-710. |
| [9] | 杨红生,周啸,张庆武.以多层次聚苯胺颗粒为电极活性物质的超级电容器的电化学性能[J].物理化学学报,2005(04):414-418. |
| [10] | Gupta V;Miura N .Large-area network of polyaniline nanowires prepared by potentiostatic deposition process[J].Electrochemistry communications,2005(10):995-999. |
| [11] | Iijima S;Ichihashi T .[J].Nature,1993,363:603-605. |
| [12] | 江奇,卢晓英,赵勇,于作龙.碳纳米管微结构的改变对其容量性能的影响[J].物理化学学报,2004(05):546-549. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%