FTIR study on the effect of free ions in PMMA/ENR 50 polymer electrolyte system

Rahman, Norazah Abd; Navaratnam, Shanti K; Abidin, Siti Zafirah Zainal; Latif, Famiza Abdul

doi:10.1063/1.5062702

Cited by 6 publications

(3 citation statements)

References 22 publications

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“…In addition, the FTIR analysis is also beneficial to determine the association and dissociation of ions within the electrolytes [ 76 ]. There are two possible reactive sites in the thiocyanate anion (SCN - )which can form N-bonding (CN stretching) and S-bonding (CS stretching) as well as the complexes of the N and S atoms (SCN bending) [ 77 ].…”

Section: Resultsmentioning

confidence: 99%

Structural, Electrical and Electrochemical Properties of Glycerolized Biopolymers Based on Chitosan (CS): Methylcellulose (MC) for Energy Storage Application

et al. 2021

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In this work, a pair of biopolymer materials has been used to prepare high ion-conducting electrolytes for energy storage application (ESA). The chitosan:methylcellulose (CS:MC) blend was selected as a host for the ammonium thiocyanate NH4SCN dopant salt. Three different concentrations of glycerol was successfully incorporated as a plasticizer into the CS–MC–NH4SCN electrolyte system. The structural, electrical, and ion transport properties were investigated. The highest conductivity of 2.29 × 10−4 S cm−1 is recorded for the electrolyte incorporated 42 wt.% of plasticizer. The complexation and interaction of polymer electrolyte components are studied using the FTIR spectra. The deconvolution (DVN) of FTIR peaks as a sensitive method was used to calculate ion transport parameters. The percentage of free ions is found to influence the transport parameters of number density (n), ionic mobility (µ), and diffusion coefficient (D). All electrolytes in this work obey the non-Debye behavior. The highest conductivity electrolyte exhibits the dominancy of ions, where the ionic transference number, tion value of (0.976) is near to infinity with a voltage of breakdown of 2.11 V. The fabricated electrochemical double-layer capacitor (EDLC) achieves the highest specific capacitance, Cs of 98.08 F/g at 10 mV/s by using the cyclic voltammetry (CV) technique.

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Section: Resultsmentioning

confidence: 99%

Structural, Electrical and Electrochemical Properties of Glycerolized Biopolymers Based on Chitosan (CS): Methylcellulose (MC) for Energy Storage Application

et al. 2021

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“…The association and dissociation of the salt with the biomembrane and the electrolyte system have been provided from the FTIR spectrum. [32] Figure 7a and 7b represent the FTIR spectrum for Sargassum Muticum Extract (SME), ethanolic extract of Sargassum Muticum, and SMBP, the prepared biomembrane film (1 g SME + 0.8 g PVA). Figure 8 illustrates the FTIR spectra for the electrolyte membranes SMMC 0.5 TO SMgMC 0.8.…”

Section: Ftirmentioning

confidence: 99%

Development of a Solid Bio‐Electrolyte from a Seaweed Extract – Polyvinyl Alcohol Blend for Primary Mg‐Ion Conducting Batteries

Suvarnna

Shanjitha²,

Selvasekarapandian

et al. 2023

ChemistrySelect

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A novel solid bio‐electrolyte from seaweed acts as a potential candidate for electrolytes in batteries by solution casting technique. The ethanol extract of seaweed Sargassum Muticum (SME) is blended with PVA to prepare the bio‐membrane and along with MgCl2 as the ionic provider, a solid bio‐electrolyte is produced. The ionic conductivity of the prepared bio‐membrane, 1 g SME+0.8 g PVA is 1.57×10−6 S cm−1. XRD analysis affirms the amorphous nature of the prepared bio‐electrolytes and the highest degree of amorphous nature is apparent for the composition of 1 g SME+0.8 g PVA+0.7 wt% MgCl2. Complex formation between the SME, polyvinyl alcohol, and the added charge carrier has been made evident from the FTIR technique. Thermal properties of the bio‐electrolytes by differential scanning calorimetry (DSC) are supported by the low Tg. Electrochemical impedance analysis for the prepared bio‐electrolytes and the maximum ionic conductivity of 2.22×10−3 S cm−1 is exhibited by 1 g SME+0.8 g PVA+0.7 wt% MgCl2 membrane. A primary magnesium‐ion conducting battery has been constructed with the highest conducting bio‐electrolyte membrane and an open circuit voltage of 2.18 V validates the application of this bio‐membrane as a promising solid electrolyte for energy storage devices.

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“…[22] b) Area B: The higher wave number and intensity in the nano phase (2051 cm -1 >2039 cm -1 ) compared to the macro phase provides further evidence that the nano formulation has a higher concentration of free ions, a nding that is corroborated by the conductivity test. [23] The nanogel has higher conductivity (as shown in table 5) than simple gel because it generates molecular networking, which functions as an electric contact between the molecules, and it also has more water, which displays high conductivity behavior. It can also be based on the creation of conductive pathways in the bulk of a composite network via nanoparticles create relationships.…”

Section: Conductivity Testmentioning

confidence: 99%

A procedure for temperature-sensitive, fluorescence-active carrageenan nanogel using disoriented conformation of carrageenan with de-solvating agent.

purohit,

Bhatt,

Khailkhura

2023

Preprint

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Polymers, in their grafted and derivatized forms, are frequently used in medical research due to their unique properties as diagnostic, targeted, sustained, and regulated carriers. The method of iota carrageenan nanogel has been developed in this invention. The method is based on solubility, which was first investigated using the solvent screening technique. The de-solvating agent was then used to reduce the particle size and produce the gel in nano form, moreover, the viscosity and other physical properties were evaluated. Furthermore, it was compared to the basic gel, which was formed by adding polymer to hot water without any additional procedures, as opposed to the nano gel. The nanogel has an advantage over the regular gel due to its increased stability, fluorescence activity, and other favorable qualities. The special benefit of nanogel was discovered to be that it is an effective spreader material due to its low gel point and viscosity. The breakthrough technique that depends just on temperature and desolation without the need for crosslinking compounds will be more ecologically friendly and advantageous to polymer scientists, particularly in the domain of medical science.

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FTIR study on the effect of free ions in PMMA/ENR 50 polymer electrolyte system

Cited by 6 publications

References 22 publications

Structural, Electrical and Electrochemical Properties of Glycerolized Biopolymers Based on Chitosan (CS): Methylcellulose (MC) for Energy Storage Application

Structural, Electrical and Electrochemical Properties of Glycerolized Biopolymers Based on Chitosan (CS): Methylcellulose (MC) for Energy Storage Application

Development of a Solid Bio‐Electrolyte from a Seaweed Extract – Polyvinyl Alcohol Blend for Primary Mg‐Ion Conducting Batteries

A procedure for temperature-sensitive, fluorescence-active carrageenan nanogel using disoriented conformation of carrageenan with de-solvating agent.

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