Plasticized solid polymer electrolyte based on triblock copolymer poly(vinylidene chloride-co-acrylonitrile-co-methyl methacrylate) for magnesium ion batteries

Ponraj, Thondhi; Ramalingam, Anantharaj; Selvasekarapandian, S.; Srikumar, S. R.; Manjuladevi, R.

doi:10.1007/s00289-019-03091-5

Cited by 28 publications

(16 citation statements)

References 56 publications

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“…These three regions are (1) low frequency dispersion regions, (2) mid‐frequency plateau region, and (3) a high‐frequency dispersive region, respectively 78 . The ac conductivity of the polymer electrolytes can be expressed in terms of Jonsher's Power Law as: 79

σ_{ac} goodbreak= σ_{dc} goodbreak+ A ω^{n}

where σ dc is the DC conductivity of the electrolytes, A is a pre‐exponential factor, ω is the angular frequency, and n represents the degree of interaction between mobile ions and its surrounding, where 0 < n < 1 80 . Low conductivity at the low‐frequency dispersion region is due to the accumulation of charges at the blocking electrodes due to the slow periodic reversal of the electric field.…”

Section: Resultsmentioning

confidence: 99%

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Novel solid biopolymer electrolyte based on methyl cellulose with enhanced ion transport properties

Koliyoor

ISMAYIL

Hegde

et al. 2021

J of Applied Polymer Sci

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Magnesium ion conducting solid polymer electrolyte films are prepared with biodegradable methyl cellulose and Mg(NO3)2.6H2O by solution casting method. FTIR spectrum of the films confirmed the interaction between the polymer host and the metal salt. FTIR deconvolution gives a clear picture of the percentage of free ions with the salt concentration variation. Structural modification of the polymer upon salt doping are studied with XRD analysis. Glass transition temperature of the pristine film is found to increase with the concentration of the salt, which is attributed to an increase in the coordination between Mg+2 and oxygen atoms of the polymer matrix and formation of transient crosslinks. TGA analysis accounts for the thermal stability of the electrolyte films. The electrical properties of the films have been analyzed, and the values of ionic conductivities of the films were calculated. Electrolyte film with 25 wt% of the salt, which is highly amorphous, is found to have the highest room‐temperature ionic conductivity of 1.02 × 10−4 S cm−1. SEM micrographs show variation in the surface morphology of the electrolytes with the variation in the concentration of the salt. The films' electrochemical stability window and ionic transference number are calculated to find the suitability for energy storage applications.

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σ_{ac} goodbreak= σ_{dc} goodbreak+ A ω^{n}

Section: Resultsmentioning

confidence: 99%

“…The value of DC conductivity can be obtained by extrapolating this plateau region into the y‐axis. An increase in the ionic conductivity at a higher frequency region is due to the short‐range transport of ions 80,81 . Values of DC conductivity obtained from the graph are given in Table 6.…”

Section: Resultsmentioning

confidence: 99%

Novel solid biopolymer electrolyte based on methyl cellulose with enhanced ion transport properties

Koliyoor

ISMAYIL

Hegde

et al. 2021

J of Applied Polymer Sci

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“…The crucial part of producing a high-performance battery is the selection of suitable electrolytes to match with the magnesium electrode. Liquid electrolytes are commonly used in the production of batteries as they can exhibit excellent ionic conductivity [ 13 ], but they were found to have some problems due to their properties, such as easily leakage and causing corrosion during packaging [ 14 , 15 , 16 ]. Aside from that, most liquid electrolytes are highly toxic and combustible [ 13 , 17 ], so they can contaminate the environment and can also harm consumers.…”

Section: Introductionmentioning

confidence: 99%

“…Liquid electrolytes are commonly used in the production of batteries as they can exhibit excellent ionic conductivity [ 13 ], but they were found to have some problems due to their properties, such as easily leakage and causing corrosion during packaging [ 14 , 15 , 16 ]. Aside from that, most liquid electrolytes are highly toxic and combustible [ 13 , 17 ], so they can contaminate the environment and can also harm consumers. These facts have led to the innovation and development of polymer electrolytes for the production of rechargeable batteries.…”

Section: Introductionmentioning

confidence: 99%

“…Earlier studies on biopolymers as amorphous polymer salt complexes have shown that these naturally abundant polymers exhibited good film producibility [ 19 ]. Collective claims on biopolymers as a host for ion conduction include cellulose, starch, and carrageenan, which have room temperature conductivities in the range of 10 −5 –10 −4 S·cm −1 [ 13 , 14 , 18 ]. Agarose is a seaweed-derived biopolymer employed as a host polymer for Mg 2+ conduction.…”

Section: Introductionmentioning

confidence: 99%

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Role of Mg(NO3)2 as Defective Agent in Ameliorating the Electrical Conductivity, Structural and Electrochemical Properties of Agarose–Based Polymer Electrolytes

et al. 2021

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Polymer electrolytes based on agarose dissolved in DMSO solvent complexed with different weight percentages of Mg(NO3)2 ranging from 0 to 35 wt% were prepared using a solution casting method. Electrochemical impedance spectroscopy (EIS) was applied to study the electrical properties of this polymer electrolyte, such as ionic conductivity at room and different temperatures, dielectric and modulus properties. The highest conducting film has been obtained at 1.48 × 10−5 S·cm−1 by doping 30 wt% of Mg(NO3)2 into the polymer matrix at room temperature. This high ionic conductivity value is achieved due to the increase in the amorphous nature of the polymer electrolyte, as proven by X-ray diffractometry (XRD), where broadening of the amorphous peak can be observed. The intermolecular interactions between agarose and Mg(NO3)2 are studied by Fourier transform infrared (FTIR) spectroscopy by observing the presence of –OH, –CH, N–H, CH3, C–O–C, C–OH, C–C and 3,6-anhydrogalactose bridges in the FTIR spectra. The electrochemical properties for the highest conducting agarose–Mg(NO3)2 polymer electrolyte are stable up to 3.57 V, which is determined by using linear sweep voltammetry (LSV) and supported by cyclic voltammetry (CV) that proves the presence of Mg2+ conduction.

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Multivalent Cation Transport in Polymer Electrolytes – Reflections on an Old Problem

Jeschull,

Hub,

Kolesnikov

et al. 2023

Advanced Energy Materials

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Today an unprecedented diversification is witnessed in battery technologies towards so‐called post‐Li batteries, which include both other monovalent (Na+ or K+) and multivalent ions (e.g., Mg2+ or Ca2+). This development is driven, among other factors, by goals to establish more sustainable and cheaper raw material platforms, using more abundant raw material, while maintaining high energy densities. For these new technologies a decisive role falls to the electrolyte, that ultimately needs to form stable electrode‐electrolyte interfaces and provide sufficient ionic conductivity, while guaranteeing high safety. The transport of metal‐ions in a polymer matrix is studied extensively as solid electrolytes for battery applications, particularly for Li‐ion batteries and are now also considered for multivalent systems. This poses a great challenge as ion transport in the solid becomes increasingly difficult for multivalent ions. Interestingly, this topic is a subject of interest for many years in the 80s and 90s and many of the problems then are still causing issues today. Owing to recent progress in this field new possibilities arise for multivalent ion transport in solid polymer electrolytes. For this reason, in this perspective a stroll down memory lane is taken, discuss current advancements and dare a peek into the future.

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Plasticized solid polymer electrolyte based on triblock copolymer poly(vinylidene chloride-co-acrylonitrile-co-methyl methacrylate) for magnesium ion batteries

Cited by 28 publications

References 56 publications

Novel solid biopolymer electrolyte based on methyl cellulose with enhanced ion transport properties

Novel solid biopolymer electrolyte based on methyl cellulose with enhanced ion transport properties

Role of Mg(NO3)2 as Defective Agent in Ameliorating the Electrical Conductivity, Structural and Electrochemical Properties of Agarose–Based Polymer Electrolytes

Multivalent Cation Transport in Polymer Electrolytes – Reflections on an Old Problem

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