کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5179717 | 1502525 | 2015 | 8 صفحه PDF | دانلود رایگان |
- Simultaneous doping with organic acids in solvent-free synthesis of polyaniline.
- Synergistic improvement in conductivity and specific capacitance for dual doping.
- Synergy of dual doping exhibits properties comparable with PAni/MWCNT composites.
- Easy synthesis method like mechanochemical or solid-state route has been followed.
This work reveals, for the first time, the synergistic improvement of electrical conductivity and supercapacitive behaviour of PAni prepared via solvent-free solid state synthesis method using the combination of dopants at appropriate ratios. The improvements in electrical and capacitive behaviour are comparable or even better than PAni composites with multiwalled carbon nanotube (MWCNTs). PAni has been prepared via solvent-free synthesis route by simultaneous dual doping with camphorsulfonic acid (CSA) and citric acid (CA) at the different ratios of [CA]:[CSA] as 1:3, 2:2 and 3:1. Dual doped PAni exhibits synergistic improvement in conductivity (up to 4.8Â ÃÂ 10â2Â Scmâ1) and capacitive behaviour (up to 303.1Â Fgâ1) as well which have been compared with that of PAni/MWCNTs composites containing 2, 4 and 8Â wt% MWCNTs. PAni doped with [CA]:[CSA]Â =Â 3:1 exhibits higher conductivity than the composite containing 4Â wt% MWCNTs, and even higher specific capacitance than the composite with 8Â wt% MWCNTs loading.
Journal: Polymer - Volume 81, 16 December 2015, Pages 62-69