Investigation of N–S-based graphene quantum dot on sodium alginate with ammonium thiocyanate (NH4SCN) biopolymer electrolyte for the application of electrochemical devices

Vanitha, N.; Shanmugapriya, C.; Selvasekarapandian, S.; Krishna, M. Vengadesh; Nandhini, K.

doi:10.1007/s10854-022-08404-5

Cited by 9 publications

(3 citation statements)

References 59 publications

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“…3d), the E-MoS 2 presents an obvious weight loss and an endothermic peak in the range of 190-270 °C due to the NH 4 + and SCN − being deintercalated. 39,40 The weight loss and intensity of the endothermic peak for E-MoS 2 increase with an increase of thiourea in the reactants, indicating that more NH 4 + and SCN − were inserted into the interlayers, consistent with the FT-IR results.…”

Section: Dalton Transactions Papersupporting

confidence: 77%

Reactant conversion–intercalation strategy toward interlayer-expanded MoS₂ microflowers with superior supercapacitor performance

et al. 2023

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Section: Dalton Transactions Papersupporting

confidence: 77%

Reactant conversion–intercalation strategy toward interlayer-expanded MoS₂ microflowers with superior supercapacitor performance

et al. 2023

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“…The second stage of degradation in AA and salt-doped samples is due to the galactose unit's degradation. The third stage of degradation in AA and salt-added samples is due to carbonization and ash formation [39].…”

Section: (A) (B) >mentioning

confidence: 99%

Preparation and characterization of sodium-ion conducting biopolymer electrolyte membrane based on agar-agar with sodium nitrite for primary Na-ion battery.

Sowmiya,

Shanthi

2024

Preprint

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Utilizing a solution-casting approach with water as the solvent, agar-agar solid biopolymer membranes incorporating sodium nitrite at various molecular ratios were successfully synthesized. Characterization of these membranes was conducted using techniques including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Differential scanning calorimetry (DSC), Thermogravimetric analysis (TGA), AC Impedance techniques, Transference number measurements, and Linear sweep voltammetry (LSV). XRD analysis revealed the amorphous nature of the membranes, while FTIR elucidated the complexation behavior between the polymer and salt. DSC analysis indicated a decrease in the glass transition temperature with increasing salt concentrations up to a specific value. TGA was employed to assess the thermal stability of the polymer electrolyte membrane. The conductivity of pure agar-agar was found to be 3.12 X 10− 7 S cm− 1, and the maximum ionic conductivity, observed at room temperature, reached 5.07 X 10− 3 S cm− 1 for the membrane with a composition of 30% agar: 70% NaNO2. Transference number measurements, conducted using Wagner's DC polarization technique, provided insights into the nature of charge transport within the membrane. The electrochemical stability, determined through linear sweep voltammetry, was observed to be 2.8 V. Furthermore, the highest conductivity polymer electrolyte was employed in the fabrication of a primary sodium ion battery, incorporating two types of cathodes- V2O5 and MnO2. The resulting batteries exhibited open circuit voltages of 3.02 and 2.69 for V2O5 and MnO2 cathodes, respectively.

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“…Impedance spectroscopy can be used to assess ionic conductivity in biopolymer electrolytes. A number of factors determine this, including what kind of ionic carrier is present, its level of concentration and carrier mobility [19] From Figure 7, it's clear there are two distinct frequencies observed on pure agar-chol-chol lines: a high frequency semicircle followed by a low-frequency peak [20] . This is due to both bulk resistance (Rb) and bulk capacitance (Cb) working in parallel which produces that high semicircle while ion penetration into an electrodeelectrolyte interface creates that lower peak.…”

Section: 4analysis Of Impedancementioning

confidence: 99%

Development And Characterization of Magnesium Ion Conducting Biopolymer Electrolyte Using Agar and Magnesium Nitrate Hexa Hydrate

R. Sujatha ,C. Shanmugapriya

2023

tjjpt

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The aim of the study was to develop an agar-based biopolymer electrolyte with varying concentrations of Mg(NO3)2.6H2O in double-distilled water as the solvent. To better understand the impact each concentration had on the biopolymer, a range of characterisation techniques were employed - XRD, FTIR, DSC, Ac impedance analysis and transference number measurement being amongst them. XRD was used to determine whether a crystalline or amorphous polymer resulted from the process. Agar and magnesium nitrate may form complexes, according to FTIR. Through the process of differential scanning calorimetery, researchers have pinpointed the glass transition temperatures for a biopolymer electrolyte with superior conductivity. In order to study its performance, a Mg2+ ion primary battery was built using a biopolymer membrane with a highest ionic conducting of 1.74 x 10-4 S cm-1. This electrolyte was comprised of 40% agar and 60% magnesium nitrate in water, and its ionic transference number of Mg2+ had been determined at 0.30 via Evan's methodology.

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Investigation of N–S-based graphene quantum dot on sodium alginate with ammonium thiocyanate (NH4SCN) biopolymer electrolyte for the application of electrochemical devices

Cited by 9 publications

References 59 publications

Reactant conversion–intercalation strategy toward interlayer-expanded MoS₂ microflowers with superior supercapacitor performance

Reactant conversion–intercalation strategy toward interlayer-expanded MoS₂ microflowers with superior supercapacitor performance

Preparation and characterization of sodium-ion conducting biopolymer electrolyte membrane based on agar-agar with sodium nitrite for primary Na-ion battery.

Development And Characterization of Magnesium Ion Conducting Biopolymer Electrolyte Using Agar and Magnesium Nitrate Hexa Hydrate

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Investigation of N–S-based graphene quantum dot on sodium alginate with ammonium thiocyanate (NH4SCN) biopolymer electrolyte for the application of electrochemical devices

Cited by 9 publications

References 59 publications

Reactant conversion–intercalation strategy toward interlayer-expanded MoS2 microflowers with superior supercapacitor performance

Reactant conversion–intercalation strategy toward interlayer-expanded MoS2 microflowers with superior supercapacitor performance

Preparation and characterization of sodium-ion conducting biopolymer electrolyte membrane based on agar-agar with sodium nitrite for primary Na-ion battery.

Development And Characterization of Magnesium Ion Conducting Biopolymer Electrolyte Using Agar and Magnesium Nitrate Hexa Hydrate

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Product

Resources

About

Reactant conversion–intercalation strategy toward interlayer-expanded MoS₂ microflowers with superior supercapacitor performance

Reactant conversion–intercalation strategy toward interlayer-expanded MoS₂ microflowers with superior supercapacitor performance