Abstract
The present investigation deals with the fabrication of a novel flexible and highly conductive PPy electrode. This was made by festooning PPy nanoparticles on carbon cloth (CC) by using chemical liquid process. The developed porous PPy@CC composite have good flexibility with low weight (1.1 mg) and high electrical conductivity (89 Ω−1cm−1). Fourier-transform infrared spectroscopy (FTIR) and X-ray diffraction spectroscopy (XRD) confirmed the formation of PPy on carbon cloth. Scanning electron micrographs (SEM) reveals that the PPy nanoparticles are encapsulated in carbon cloth. The fabricated carbon cloth has been used for solid-state symmetrical supercapacitors (SC) and low-cost material for electrode in potential energy storage devices. These film electrodes showed much superior electrochemical performance i.e. high stability under different current density, encouraging energy density, lower internal resistivity and higher specific capacitance. Synthesized flexible PPy@CC composite electrodes have brilliant applications in various kinds of electrochemical energy storage devices.
Highlights
The design and development of inexpensive, thin, flexible, light weight and even roll up portable electronic devices with multifunctional applications have recently received overwhelming interest among researchers from academia and industry
It can be seen that well-ordered PPy nanoparticles (PPyNPs) were aligned vertically on the carbon fiber surfaces in the carbon cloth forming a spherical structure consisting of the three-dimensional conductive carbon skeleton and the electroactive polymer nanoparticles
The hierarchical structure of the carbon fibers in carbon fabric are distributed in three dimensions and the upward-growing PPy nanoparticles provide an easy ion diffusion path as well as a quick electron transport avenue that is critical to high charge storage performance
Summary
The design and development of inexpensive, thin, flexible, light weight and even roll up portable electronic devices with multifunctional applications have recently received overwhelming interest among researchers from academia and industry. Supercapacitors are superior to batteries in terms of their enhanced specific capacitance [2], better cyclic stability [3], high power and energy density [4], environmental benignancy and safety [5] Various technologies such as micro fabrication technology open up low-cost production for a high performing, robust and adjustable micro supercapacitor system which further explores its feasibility to be integrated into miniaturized devices [6,7]. Along with transition metal, transition metal oxide such as TiO2, RuO2, NiO, MnO2, Co3O4, V2O5 have been used commonly as electrode resources for supercapacitor due to their low cost, good chemical stability, electronic, optical and UV absorbing properties. The PPy nanoparticles grow directly as "core" by themselves without any binder as additives that ensure their high electrical conductivity
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