Traditional salt-in-water electrolyte <i>vs.</i> water-in-salt electrolyte with binary metal oxide for symmetric supercapacitors: capacitive <i>vs.</i> faradaic

Minakshi, Manickam; Appadoo, Dominique

doi:10.1039/d0dt01871f

Cited by 41 publications

(24 citation statements)

References 41 publications

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“…Furthermore, the Pd plot is also depicted in Figure 12. Along the 200 cycles of Minakshi et al [99] showed that the ES of sodium and lithium ions from aqueous solution in binary metal oxide (BMO) was important for uses of renewable ES. They mentioned the BMO as a novel electrode material for SCs.…”

Section: Characterization Of Edlcmentioning

confidence: 99%

Bio-Based Plasticized PVA Based Polymer Blend Electrolytes for Energy Storage EDLC Devices: Ion Transport Parameters and Electrochemical Properties

et al. 2021

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This report shows a simple solution cast methodology to prepare plasticized polyvinyl alcohol (PVA)/methylcellulose (MC)-ammonium iodide (NH4I) electrolyte at room temperature. The maximum conducting membrane has a conductivity of 3.21 × 10−3 S/cm. It is shown that the number density, mobility and diffusion coefficient of ions are enhanced by increasing the glycerol. A number of electric and electrochemical properties of the electrolyte—impedance, dielectric properties, transference numbers, potential window, energy density, specific capacitance (Cs) and power density—were determined. From the determined electric and electrochemical properties, it is shown that PVA: MC-NH4I proton conducting polymer electrolyte (PE) is adequate for utilization in energy storage device (ESD). The decrease of charge transfer resistance with increasing plasticizer was observed from Bode plot. The analysis of dielectric properties has indicated that the plasticizer is a novel approach to increase the number of charge carriers. The electron and ion transference numbers were found. From the linear sweep voltammetry (LSV) response, the breakdown voltage of the electrolyte is determined. From Galvanostatic charge-discharge (GCD) measurement, the calculated Cs values are found to drop with increasing the number of cycles. The increment of internal resistance is shown by equivalent series resistance (ESR) plot. The energy and power density were studied over 250 cycles that results to the value of 5.38–3.59 Wh/kg and 757.58–347.22 W/kg, respectively.

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Section: Characterization Of Edlcmentioning

confidence: 99%

Bio-Based Plasticized PVA Based Polymer Blend Electrolytes for Energy Storage EDLC Devices: Ion Transport Parameters and Electrochemical Properties

et al. 2021

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“…Table 2 shows the calculated percentages of non-functional and functional carbon atoms. The C 1s spectra were decomposed into at most five identified components that represented carbon atoms due to aliphatic and aromatic backbones (C–C/C=C) at 285 eV and carbon atoms present in C–N (286.1 eV), C=N/C–OH (286.6 eV), C=O (287.6 eV), and COOH (290.5 eV) [ 60 , 61 , 62 , 63 ]. The C–C and C=C were the predominant groups for all samples.…”

Section: Resultsmentioning

confidence: 99%

The Application of Hollow Carbon Nanofibers Prepared by Electrospinning to Carbon Dioxide Capture

2021

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Coaxial electrospinning has been considered a straightforward and convenient method for producing hollow nanofibers. Therefore, the objective of this study was to develop hollow activated carbon nanofibers (HACNFs) for CO2 capture in order to reduce emissions of CO2 to the atmosphere and mitigate global warming. Results showed that the sacrificing core could be decomposed at carbonization temperatures above 900 °C, allowing the formation of hollow nanofibers. The average outer diameters of HACNFs ranged from 550 to 750 nm, with a shell thickness of 75 nm. During the carbonization stage, the denitrogenation reactions were significant, while in the CO2 activation process, the release of carbon oxides became prominent. Therefore, the CO2 activation could increase the percentages of N=C and quaternary N groups. The major nitrogen functionalities on most samples were O=C–NH and quaternary N. However, =C and quaternary N groups were found to be crucial in determining the CO2 adsorption performance. CO2 adsorption on HACNFs occurred due to physical adsorption and was an exothermic reaction. The optimal CO2 adsorption performance was observed for HACNFs carbonized at 900 °C, where 3.03 mmol/g (1 atm) and 0.99 mmol/g (0.15 atm) were measured at 25 °C. The degradation of CO2 uptakes after 10 adsorption−desorption cyclic runs could be maintained within 8.9%.

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“…The major difference is that the cocrystal exhibits low-intensity peaks, which may be caused by the formation of the hydrogen bonds. 42,43 The results of FTIR spectra conrm the formation of 2HNIW$HMX cocrystal as the supplement of PXRD. SEM analysis was carried out to compare the external appearance of HMX, HNIW, and cocrystal ( Fig.…”

Section: Isothermal Slurry Co-crystallizationmentioning

confidence: 99%

Investigation of the solid–liquid ternary phase diagrams of 2HNIW·HMX cocrystal

et al. 2021

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Traditional salt-in-water electrolyte vs. water-in-salt electrolyte with binary metal oxide for symmetric supercapacitors: capacitive vs. faradaic

Abstract: The electrochemical energy storage of lithium and sodium ions from aqueous solutions in binary metal oxides is of great interest in renewable energy storage applications. Binary metal oxides are of...

Cited by 41 publications

References 41 publications

Bio-Based Plasticized PVA Based Polymer Blend Electrolytes for Energy Storage EDLC Devices: Ion Transport Parameters and Electrochemical Properties

Bio-Based Plasticized PVA Based Polymer Blend Electrolytes for Energy Storage EDLC Devices: Ion Transport Parameters and Electrochemical Properties

The Application of Hollow Carbon Nanofibers Prepared by Electrospinning to Carbon Dioxide Capture

Investigation of the solid–liquid ternary phase diagrams of 2HNIW·HMX cocrystal

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