Facile synthesis of polypyrrole nanofiber and its enhanced electrochemical performances in different electrolytes

Abstract

Abstract.A porous nanocomposite based on polypyrrole (PPy) and sodium alginate (SA) has been synthesized by easy, inexpensive, eco-friendly method. As prepared nanocomposite showed fibrillar morphology in transmission electron microscopic (TEM) analysis. The average diameter of ~100 nm for the nanofibers was observed from scanning electron microscopic (SEM) analysis. As prepared nanofiber, was investigated as an electrode material for supercapacitor application in different aqueous electrolyte solutions. PPy nanofiber showed enhanced electrochemical performances in 1 M KCl solution as compared to 1 M Na 2 SO 4 solution. Maximum specific capacitance of 284 F/g was found for this composite in 1 M KCl electrolyte. It showed 76% specific capacitance retention after 600 cycles in 1 M KCl solution. Electrochemical Impedance Spectra showed moderate capacitive behavior of the composite in both the electrolytes. Further PPy nanofiber demonstrated higher thermal stability as compared to pure PPy.

Silver nanoparticles decorated polypyrrole/graphene nanocomposite: A potential candidate for next‐generation supercapacitor electrode material

“…40 For all the electrode materials the broad band around 3425 cm 21 and the band at 2926 cm 21 correspond to the N-H stretching vibration and C-H stretching vibration, respectively. 41…”

Size-controllable polypyrrole nanospheres synthesized in the presence of phosphorylated chitosan and their size effect in different applications

“…On the other hand, the large molecular chain structure of anionic polyelectrolyte makes it more difficult to be removed from the conducting polymers than the small molecule acid, exhibiting a better stability once being doped in conducting polymers (Nguyen and de Vos 2004). In recent years, several works have demonstrated that using sodium alginate (SA) (Li et al 2011;Sahoo et al 2012), carboxymethylcellulose sodium (CMC) (Basavaraja et al 2012;Chou et al 2011;Peng et al 2012), poly(sodium-4-styrenesulfonate) (PSSNa) , and phosphorylated polyvinyl alcohol (PPVA) (Yang et al 2014) in the preparation process, various nanostructures of conducting polymers could be obtained.…”

Screen-printed electrode produced by printed-circuit board technology. Application to cancer biomarker detection by means of plastic antibody as sensing material

“…These materials show the capability to store charge Faradically through various charge transfer reactions between electrode and electrolyte, presenting high conductivity in charged state and low equivalent series resistance. The charge/discharge process in these types of pseudocapacitive materials is basically associated with the insertion/deinsertion of counter ions, arising from the electrolyte [66, 67].…”

“…In general, more sensitive responses were achieved by CV measurements, but the other electrochemical approaches displayed similar linear concentration ranges of response. It can happens because PPy is a conductive polymer and is considered as a pseudocapacitor where the capacitance developed holds Faradaic origin, with process of chemical/electronic changes as formation/removal of radical cation or radical anion centers, indicating a pseudocapacitance character[66, 67].…”