Prepared Polyprrole/cotton Fabric Electrode Materials And Performance Research Via Hard Template

Cotton fibers are considered as ideal basal materials of flexible supercapacitors because of its soft texture, big surface areas and cheap. Polypyrrole(PPy) are paid more attentions because of its good electrical conductivity,high power capacity, good environment stability and synthetic etc. Template methods are widely used to prepare for conductive polymer supercapacitors electrode materials due to a sort of facile, efficient, and highly controllable synthesis. In this thesis, base on the cotton, respectively using nano-CuO, reduced grapheme oxide(RGO) and methyl orange(MO)-FeCl3 as template to control the morphology, structure and size of Polypyrrole(PPy) on cotton, and obtained flexible supercapatiors electrode material with excellent properties. The detailed results are included:(1)We used a cotton fabric coated with polypyrrole(PPy) as flexible electrode, the CuO as template via a simple chemical polymerization process to prepare fabric electrode coated with polypyrrole(PPy). The experiment results show that: the electrical conductivity of the coated samples increased dramatically to 10.0S.cm-1 with the introduction of CuO. The charge/discharge test further reveals that the fabric device shows high specific capacitance(225F.g-1 at a current density of 0.6mA.cm-2) and good cycling performance(about 92% capacitance retention after 200 cycles)in aqueous electrolyte.(2)In this article, reduced grapheme oxide(RGO) and polypyrrole(PPy) were deposited on cotton fabric via thermal reduction of GO and chemical polymerization of pyrrole to prepare textile-based electrodes for supercapacitor application. The experiment results show that: The obtained RGO-PPy-fabric retained good flexibility of textile and was highly conductive, with the conductivity of 1.2S.cm-1. The PPy-RGO-fabric supercapacitor showed a specific capacitance of 336 F.g-1 and an energy density of 21.1kw.kg-1 at a current density of o.6mA.cm-2. The RGO sheets served as frameworks to stabilize the PPy layer, giving rise to improve cycling stability.(3)In this article, polypyrrole(PPy) nanorods were deposited on cotton fabrics via in situ polymerization of pyrrole in the presence of the fibrillar complex of FeCl3 and methyl orange as a reactive self-degraded template. The obtained fabrics could be directly used as supercapacitor electrodes, with a maximum specific capacitance of 325 F.g-1 and an energy density of 24.4kw.kg-1 at a current density of 0.6mA.cm-2.The capacitance remained higher than 200 F.g-1 after 500 cycles.