Preparation of Electrochemical Supercapacitor Based on Polypyrrole/Gum Arabic Composites

Abstract

The current research focused on the super capacitive behavior of organic conducting polymer, i.e., polypyrrole (PPy) and its composites with gum arabic (GA) prepared via inverse emulsion polymerization. The synthesized composites material was analyzed by different analytical techniques, such as UV-visible, FTIR, TGA, XRD, and SEM. The UV-Vis and FTIR spectroscopy clearly show the successful insertion of GA into PPy matrix. The TGA analysis shows high thermal stability for composites than pure PPy. The XRD and SEM analysis show the crystalline and amorphous structures and overall morphology of the composites is more compact and mesoporous as compared to the pure PPy. The electrochemical properties of modified solid state supercapacitors established on pure polypyrrole (PPy), polypyrrole/gum arabic (PPy/GA) based composites were investigated through cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and galvanostatic charge–discharge (GCD). The specific capacitance of the PPy modified gold electrode is impressive (~168 F/g). The specific capacitance of PPy/GA 1 electrode has been increased to 368 F/g with a high energy density and power density (~73 Wh/kg), and (~599 W/kg) respectively.

Understanding the Behavior of Supercapacitor Materials via Electrochemical Impedance Spectroscopy: A Review

“…ESR is calculated by adding the charge analogous series resistance, contact resistance between various supercapacitor components, and intrinsic resistance of the electrode and electrolyte solution. A wide potential window is advantageous for an Acetylene black 1 M KOH 7.8 - [52] Polyaniline/acetylene black 1 M KOH 1.6 2.6 [52] Copper ferrite 1 M KOH 8.2 - [52] Polyaniline/copper ferrite 1 M KOH 1.2 2.2 [52] Polyaniline/acetylene black/copper ferrite 1 M KOH 0.7 1.7 [52] Polypyrrole/Gum Arabic 1 M H 2 SO 4 12.75 - [53] Carbon aerogels 6 M KOH 1.49 5.6 [54] Coal derived graphene 1 M Na 2 SO 4 2.67 2.5 [55]…”

“…[52] For the interpretation, the narrower the semicircle, the lower the R ct value. [53] If, in the high-frequency region, the semicircle is seen as too small or negligible, the device may have rapid diffusion of ions around the electrode surface and resistance with low transfer. [72] The other parameter is the Warburg impedance (W).…”

Aggregation-Induced Emission Enabled Visualization of Anisotropic Seed Emulsion Polymerization to Synthesize Monodisperse Polymer Hemispheres

“…12 As a result of the centrosymmetric interfacial tension, polymer colloids produced by traditional emulsion polymerization are usually spherical particles with homogeneous chemical structure. 13 With the rising demands of practical applications, novel technologies with more effective control on colloid morphology and composition have emerged, such as seed emulsion polymerization, 14,15 soap-free emulsion polymerization, 16 microemulsion polymerization, 17 inverse emulsion polymerization, 18 and dispersion polymerization. 19 Among them, seed emulsion polymerization can efficiently prepare monodisperse anisotropic colloidal particles with micrometer-scale size.…”

Sustainable Polyurethane‐Derived Heteroatom‐Doped Electrode Materials for Advanced Supercapacitors

“…SCs generally have higher power density, [2][3] higher lifetime and stability, and better environmental compatibility. [4][5] Activated carbon (AC), [6] graphene, [7][8][9][10] carbon nanotubes, [11] carbon fibers, [12][13] and ordered mesoporous carbon [14][15][16] are popular electrode materials for SCs, given their several beneficial properties, such as microscopic structure, structural tunability, electrical conductivity, and stability. [17][18] AC, in particular, represents one of the most popular materials due to its flexibility, simple preparation process, and relatively low synthesis cost.…”