Structural and physical properties of polyaniline/silver oxide/silver nanocomposite electrode for supercapacitor applications

Abstract

Summary Herein, Polyaniline (PANI) and polyaniline/silver oxide/silver (PANI/Ag2O‐Ag) nanocomposite were synthesized using a photopolymerization method. The functional group, structural, surface morphology, and optical properties of the samples were revealed using Fourier transform infrared (FTIR), X‐ray diffraction (XRD), scanning electron microscope (SEM), and Ultraviolet‐Visible spectroscopy techniques, respectively. XRD confirm the structure of the PANI with Ag2O‐Ag. These nanoparticles appeared in porous shapes over PANI as indicated by SEM images that gave the composites the mushroom shapes. The composite is a promising electrode for the symmetric supercapacitor with high efficiency capacitance. This capacitance is calculated under different electrolyte that is, NaOH, NaCl, Na2S2O3, and HCl, where the charge/discharge and cyclic voltammetry curve were studied under these electrolytes. The electrochemical properties of the PANI/Ag2O‐Ag nanocomposite as supercapacitor electrode materials were investigated using different electrolytes. The results confirm that the specific capacitance values are dependent on the types of the electrolytes, in which Na2S2O3 and HCl have the optimum values of 160 and 145.2 F/g, respectively at 0.4 A.g−1. Moreover, the values of energy density were 122.2 and 20.08 W h kg−1, respectively. The results also reveal that the capacitor has high stability with a very small loss in capacitance retention. This study proposes that PANI/Ag2O‐Ag are a promising material as an electrode for high‐performance supercapacitors that can be applicable in the industrial field soon.

Flower-Shaped CoS-Co2O3/G-C3N4 Nanocomposite for Two-Symmetric-Electrodes Supercapacitor of High Capacitance Efficiency Examined in Basic and Acidic Mediums

“…The charge and discharge lifetime values in the acid and base mediums were 85 and 456 s, respectively. This confirmed the non-linear curves and change in behavior in the base medium [22][23][24]. The formation of the OHgroup caused increasing negative charge on the supercapacitor electrode that enhanced the pseudocapacitance properties of the prepared supercapacitor.…”

Photodetection Enhancement via Graphene Oxide Deposition on Poly 3-Methyl Aniline

“…Such a mixture of materials reveals better stability, sensitivity, and composite contacts for optoelectronic devices [ 18 , 19 ]. Furthermore, they are cost-effective for mass production, and have a simple synthesis method [ 20 , 21 ].…”

Facile fabrication of polypyrrole/NiOx core‐shell nanocomposites for hydrogen production from wastewater

“…The combination of conductive polymers and nanostructured materials produces composite materials that are used in a wide range of products, including photocatalysts, biosensors, and fuel production. [1][2][3] The creation of hydrogen has recently received much interest as a carbon-free fuel for prospective energy production. 4 Researchers concentrating on the environmentally friendly and renewable generation of H 2 from water have already increased.…”