Study and Characterization of a Novel Polymer Electrolyte Based on Agar Doped with Magnesium Triflate

Alves, Raquel Diana Carneiro; Rodrigues, L. C.; Andrade, Juliana Ramos de; Pawlicka, Agnieszka; Pereira, L.; Martins, Rodrigo; Fortunato, Elvira; Silva, Maria Manuela

doi:10.1080/15421406.2012.703041

Cited by 32 publications

(8 citation statements)

References 21 publications

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“…But for the last few years, natural polymers have been of interest. R.D Alves et al 5 have prepared biodegradable solid polymer electrolytes based on agar and magnesium triflate Mg(CF₃SO₃)₂, which exhibited a maximum room temperature ionic conductivity of 1 × 10 −6 S cm −1 . Yadav et al, 6 studied the electrochemical properties of polymer electrolytes based on rice starch and sodium perchlorate (NaClO₄).…”

Section: Introductionmentioning

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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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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Section: Introductionmentioning

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 other step is observed between 200 and 450 °C, and represents the degradation process of the backbone of agar with a weight loss of more than 70%. 27 It is observed that the inclusion of the IL affects this degradation step by increasing the degradation temperature. 27 Through the evaluation of the thermal degradation onset of TGA, it can be stated that the minimum thermal stability of about 200 °C for the 20 and 40 wt % IL content sample composition is more than adequate for applications.…”

Section: Resultsmentioning

confidence: 99%

“…The other step is observed between 200 and 450 °C, and represents the degradation process of the backbone of agar with a weight loss of more than 70% . It is observed that the inclusion of the IL affects this degradation step by increasing the degradation temperature .…”

Section: Resultsmentioning

confidence: 99%

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Agar-Based Solid Polymer Electrolyte-Containing Ionic Liquid for Sustainable Electrochromic Devices

Alves,

Fidalgo-Marijuan,

Salado

et al. 2023

ACS Sustainable Chem. Eng.

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In the scope of circular economy, in order to achieve a new generation of sustainable and environmentally friendly materials and devices, sustainable solid polymer electrolytes emerge as a requirement for applications such as electrochromic devices (ECDs). The dispersion of ionic liquids (ILs) into polymer matrices allows the development of solid polymer electrolytes with high ionic conductivity. Agar-based electrolytes have been developed containing different contents of 1-ethyl-3-methylimidazolium thiocyanate ([Emim][SCN]). The ionic conductivity of the samples varies with the IL concentration and temperature. The highest conductivity value is obtained for the sample with 40 wt % [Emim][SCN], being 2.9 × 10–3 S cm–1 at 30 °C and 5.6 × 10–3 S cm–1 at 90 °C. Assembled ECDs with poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) screen-printed electrodes show that the optical density depends on the IL content, the coloration efficiency at 90% being 2120 and 1422.8 cm2·C– 1 for 20 and 40 wt % [Emim][SCN] content, respectively. Thus, the developed sustainable solid polymer electrolytes, based on natural polymers and ILs, represent suitable candidates for environmentally friendly ECDs.

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“…The biopolymer electrolyte based agar complexed with magnesium triflate (Mg(CF 3 SO 3 ) 2 ) has been investigated by Alves et al [270]. The sample that exhibited the highest conductivity is Agar 32.30% Mg(CF 3 SO 3 ) 2 , and the maximum conductivity values are 1.0 Â 10 À 6 and 3.8 Â 10 À 5 S cm À 1 at 30°C and 70°C, respectively.…”

Section: Batteries Using Biopolymer Electrolytesmentioning

confidence: 99%

Perspectives for solid biopolymer electrolytes in dye sensitized solar cell and battery application

Singh¹,

Polu²,

Bhattacharya³

et al. 2016

Renewable and Sustainable Energy Reviews

118

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a b s t r a c tPhotovoltaic technologies represent one of the leading research areas of solar energy which is one of the most powerful renewable alternatives of fossil fuels. In a common photovoltaic application the batteries play a key role in storage of energy generated by solar panels. Although it will take time for dye sensitized solar cells (DSSCs) and batteries based on biopolymer electrolytes to take their places in the market, laboratory studies prove that they have a lot to offer. Most efficient DSSCs and batteries available in market are based on liquid electrolytes. The advantages of liquid electrolytes are having high conductivity and good electrode-electrolyte interface whereas, disadvantages like corrosion and evaporation limit their future sustainability. Biopolymer electrolytes are proposed as novel alternatives which may overcome the problems stated above. In this review, we focus on fabrication, working principle as well as up to date status of DSSCs and batteries using biopolymer electrolytes. The effects of structural and electrical properties of biopolymer based electrolytes on the solar energy conversion efficiencies of DSSCs and their compatibility with lithium or other salts in battery applications are summarized. Biopolymer electrolyte based DSSCs are categorized on the basis of types of additives and recent outcomes of author's laboratory studies on biopolymer electrolyte based DSSCs and batteries are also presented.

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Study and Characterization of a Novel Polymer Electrolyte Based on Agar Doped with Magnesium Triflate

Cited by 32 publications

References 21 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

Agar-Based Solid Polymer Electrolyte-Containing Ionic Liquid for Sustainable Electrochromic Devices

Perspectives for solid biopolymer electrolytes in dye sensitized solar cell and battery application

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