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采用电化学循环伏安法,在不同目数不锈钢网基底上合成了聚苯胺(PANI)薄膜。通过红外测试研究了聚苯胺的化学分子结构,SEM观察了不同不锈钢网基底合成聚苯胺的表面形貌,通过电化学测试方法,研究了聚苯胺电极材料的电性能。红外测试显示在不锈钢网表面有聚苯胺的生成,SEM图谱可知,随着目数的增加,聚苯胺的形态也随之改变,电化学测试结果表明,当不锈钢网的目数在200 mesh时,比容量最高,达380F/g。此外,当目数达500 mesh时,电极材料在大电流充放电时,容量保持率最好。

Cyclic voltammetry was used to deposit polyaniline(PANI) electrode on stainless steel net of different mesh numbers. Infrared spectrum was used to ascertain the molecular structure of PANI. The surface morphologies of the PANI films are characterized by SEM. The electrochemical properties of PANI electrodes were investigated by measurements of the electrical properties. Infrared spectrum shows that PANI is deposited on stainless steel net. SEM photos indicate that PANI electrode shows different forms with the mesh numbers increasing. Electrochemical measurement shows that PANI electrode synthesized by 200 mesh number has the best electrochemical performance, the specific capacitance is about 380F/g. Besides, the electrode materials synthesized by 500 mesh number have the best capacity retention during the big electric current charge and discharge process.

参考文献

[1] Li-Jie Sun;Xiao-Xia Liu .Electrodepositions and capacitive properties of hybrid films of polyaniline and manganese dioxide with fibrous morphologies[J].European Polymer Journal,2008(1):219-224.
[2] Yu-Run Lin;Hsisheng Teng .A novel method for carbon modification with minute polyaniline deposition to enhance the capacitance of porous carbon electrodes[J].Carbon: An International Journal Sponsored by the American Carbon Society,2003(14):2865-2871.
[3] Jim Yan;Tong Wei;Bo Shao .Preparation of a graphene nanosheet/polyaniline composite with high specific capacitance[J].Carbon: An International Journal Sponsored by the American Carbon Society,2010(2):487-493.
[4] Jing Zhang;Ling-Bin Kong;Bin Wang .In-situ electrochemical polymerization of multi-walled carbon nanotube/polyaniline composite films for electrochemical supercapacitors[J].Synthetic Metals,2009(3/4):260-266.
[5] V. Khomenko;E. Frackowiak;F. Beguin .Determination of the specific capacitance of conducting polymer/nanotubes composite electrodes using different cell configurations[J].Electrochimica Acta,2005(12):2499-2506.
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