Carbon Microrod Material Derived From Human Hair and Its Electrochemical Supercapacitor Application

Authors : Derya BAL ALTUNTAŞ, Sema ASLAN, Vagif NEVRUZOĞLU

Pages : 695-708

Doi:10.35378/gujs.712032

View : 10 | Download : 2

Publication Date : 2021-09-01

Article Type : Research Paper

Abstract :Here, Turkish human hair fibers were used as a carbon source at the synthesis of human hair-sourced activated carbons insert ignore into journalissuearticles values(HHC);. During the synthesis of HHCs sodium carbonate insert ignore into journalissuearticles values(Na2CO3); was added to the synthesis process for an elevated activation by calcination at different temperatures. Then obtained HHCs utilized for the modification of carbon paste electrode to evaluate the supercapacitance performance of this activated HHC. Electrochemical investigation of the HHC modified electrodes have been carried out by employing differential pulse voltammetry insert ignore into journalissuearticles values(DPV);, cyclic voltammetry insert ignore into journalissuearticles values(CV); and electrochemical impedance spectroscopy insert ignore into journalissuearticles values(EIS); measurements. The pore and surface properties and chemical structure of the HHCs were investigated by scanning electron microscopy insert ignore into journalissuearticles values(SEM);, Brunauer-Emmett and Teller insert ignore into journalissuearticles values(BET); analysis and Raman spectroscopy. HHCs displayed a Type-IV isotherm, which indicates the existence of micro-mesoporous structure on the surface. Carbonization of the waste hair was performed by calcination to improve the pore facilities at three different temperatures insert ignore into journalissuearticles values(200-250-300 °C);. The sample was named HHC-250 insert ignore into journalissuearticles values(HHC calcinated at 250°C); exhibited the best charge storage capacity when used at the modification of carbon paste electrode, among other HHCs with a 26.88 F g−1 specific capacitance value insert ignore into journalissuearticles values(in 6 M KOH at a scan rate of 100 mV s−1);. Also, a very attainable supercapacitance stability was achieved from HHC-250 modified electrode after 1000 cycles. The presented electrode system exhibited an energy density of 3.73W h kg−1. This work can serve as a guideline for optimizing the performance of hair like biomass-derived carbons by matching their pore properties and detailed electrochemical performance investigations.
Keywords : Human hair, Supercapacitors, Electrochemical application, Carbon, Microrod