Effects of E‐Beam Irradiation on the Chemical, Physical, and Electrochemical Properties of Activated Carbons for Electric Double‐Layer Capacitors

Abstract

Activated carbons (ACs) were modified via e-beam irradiation at various doses for use as an electrode material in electric doublelayer capacitors (EDLCs). The chemical compositions of the AC surfaces were largely unchanged by the e-beam irradiation. The ACs treated with the e-beam at radiation doses of 200 kGy exhibited higher nanocrystallinity than the untreated ACs. The specific surface areas and pore volumes of the e-beam irradiated ACs were also higher than those of the untreated ACs. These results were attributed to the transformation and degradation of the nanocrystallinity of the AC surfaces due to the e-beam irradiation. The specific capacitance of the ACs treated with the e-beam at radiation doses of 200 kGy increased by 24% compared with the untreated ACs, and the charge transfer resistance of the ACs was decreased by the e-beam irradiation. The enhancement of the electrochemical properties of the e-beam irradiated ACs can be attributed to an increase in their specific surface area and surface crystallinity.

Effect of electron beam irradiation on EIS and photoelectrochemical performance of electrodeposited nanocrystalline Bi2Te3 thin films

“…The charge transfer resistance, generally related to the electroactive surface area of the electrode materials. It was a combination of the specific surface area and electrical conductivity [70]. Figure 12 represents the Bode plots of pristine and e-beam irradiated Bi 2 Te 3 thin films.…”

Structural and electrochemical characterization of carbon ion beam irradiated reduced graphene oxide and its application in voltammetric determination of norepinephrine

“…Hence, for the investigation of NE in the real sample, urine and serum samples of healthy volunteers (1 male; age 27 and 1 female; age 25) were obtained from the hospital of I.I.T. However, irradiation at high fluence lead to increased number of defects, but, at the same time, it also resulted in damaged graphene lattices and more amorphous carbon [14,16] that can be seen in terms of higher R CT for rGO irradiated at a fluence > 10 12 ions/cm 2 , as shown in Table 1. Recovery studies were performed by spiking a known amount of NE in the filtered urine samples which were then diluted 3 times prior to analysis.…”

“…As the presence of defects in graphene strongly affects the band gap and electronic transport properties, the study of defects, impurities and topographical changes in the graphene structure has been a pioneering topic of importance for both basic science and applied technology [14]. The graphene properties can be tailored from a highly conducting nano-crystalline graphene structures to poorly conducting amorphous carbon using optimized ion radiations [12,15,16]. The graphene properties can be tailored from a highly conducting nano-crystalline graphene structures to poorly conducting amorphous carbon using optimized ion radiations [12,15,16].…”

“…Many approaches for the modification of graphene using ion beams have been reported in the last decade [13][14][15][16][17], but the execution of the modified graphene in analysis has limited exposure and thus, it has been considered worthwhile to investigate the effect of irradiation on the electrochemical and electro-catalytic properties of graphene. In the present paper, use of carbon ion beam for manipulating electronic properties of reduced graphene oxide (rGO) has been described followed by its characterization and application for the voltammetric analysis of Norepinephrine (NE), an important biomolecule belonging to the class of catecholamines.…”

A Gel Polymer Electrolyte Reinforced Membrane for Lithium-Ion Batteries via the Simultaneous-Irradiation of the Electron Beam

“…The radiation grafting method consists of the step of irradiating the desired polymer to generate radicals in the main and side chains of the polymer and the step of mixing the polymer in which the radical is formed with other monomers to form a graft polymer. When these steps are done separately, it is referred to as the pre-irradiation method and when the polymer and monomers mixture is carried out, it is called the simultaneous-irradiation method [ 27 , 28 , 29 ]. In our previous studies, novel double-layered cation exchange membranes were prepared by simultaneous electron beam irradiation and were successfully applied to the saline water electrolysis (SWE) single cells [ 30 , 31 ].…”