Natural fibers and reduced graphene oxide-based flexible paper electrode for energy storage applications

Abstract

In recent era of modern and bendable technology, energy dearth arises as a paramount subject around the globe with a dire demand of flexible and lightweight energy storage devices. This study targets fabrication of reduced graphene oxide (rGO) and utility of abundantly available, cost effective, and environment friendly lignocelluloses (LC) fibers extracted from Carica papaya source, as a binder to bind active material (rGO) as robust and compact paper sheet. Fabricated samples were analyzed by X-ray diffraction for crystallographic analysis, Scanning electron microscopy, Transmission electron microscope for morphology, Fourier transform infrared spectroscopy for structural bonding, and Raman spectroscopy for vibrational modes. Robust and bendable rGO/LC paper electrode was tested for energy storage application by employing in different characterizations, i.e., cyclic voltammetry for capacitive behavior, galvanostatic charge-discharge for symmetric EDLC, and electrochemical impedance spectroscopy for resistive charge kinetics, respectively. rGO/LC composite sheet employed as working electrode in 3-electrode CV measurements and revealed specific capacitance of 591 F/g at a scan rate of 5 mV/s by keeping the undistorted shape of voltammograms at higher scan rates which present it as a suitable candidate for modern flexible and energy storage devices. rGO/LC-based symmetric cell revealed the highest specific capacitance of 228 F/g at applied current density of 0.1 A/g, the energy density of 6.3 Wh/kg, and power density of 129 W/kg, respectively. rGO/LC-based symmetric cell confirmed the cycling stability by revealing capacitance retention of 82% after 200 cycles. It can conclude that biomass-based rGO paper sheet can be a potential candidate as environmentally safe with remarkable electrochemical activity in energy storage applications.

Lignocellulosic biomass-based materials: a promising resource for viable energy storage

“…This method ensures a secure electrical connection and enhances the efficiency of the electrochemical process. Bibi et al 256 developed paper electrode materials (rGO/LC) using lignocellulose generated from papaya. The paper-based disposable energy storage electrodes utilise a rigid reduced graphene oxide (rGO) framework, with a binder called LC.…”

Harnessing Lignocellulosic Waste‐Derived Carbon Materials for Green Electrochemical Applications

“…This combination has shown enhanced properties in these materials. [64] Another crucial application for these materials is their use as battery separators. This component is essential as it ensures the separation between the battery's anode and Corn stover Physicochemical study of the influence of temperature, reaction time and acid addition on the hydrochars cathode, safeguarding stability during charging and discharging while it promotes ionic transport.…”

“…For instance, research has been conducted using electrodes crafted with papaya as a binder in combination with graphene oxide. This combination has shown enhanced properties in these materials [64] . Another crucial application for these materials is their use as battery separators.…”

Natural fibers and zinc hydroxystannate 3D microspheres based composite paper sheets for modern bendable energy storage application

“…To address the rigid structure, Zn based flexible composites are reported in literature with better electrochemical results. Lignocelluloses (LC) fibers known as natural fibers (extracted from pollutant resources) can be suitable candidate to provide a flexible matrix by employing as substrate/binder 17–21 . In presented study, ZHS 3D spheres were synthesized by facile microwave method and furthermore LC fibers extracted from Popeye stem employed as substrate for growth of ZHS microspheres to fabricate robust and conductive paper sheets for energy storage applications.…”

“…Lignocelluloses (LC) fibers known as natural fibers (extracted from pollutant resources) can be suitable candidate to provide a flexible matrix by employing as substrate/binder. [17][18][19][20][21] In presented study, ZHS 3D spheres were synthesized by facile microwave method and furthermore LC fibers extracted from Popeye stem employed as substrate for growth of ZHS microspheres to fabricate robust and conductive paper sheets for energy storage applications. As per our literature survey, this study is a first attempts synthesize the ZHS/LC composite paper sheet based working electrode for modern bendable/flexible/disposable energy storage applications.…”