Sodium alginate incorporated with magnesium nitrate as a novel solid biopolymer electrolyte for magnesium-ion batteries

Tamilisai, R.; Palanisamy, P. N.; Selvasekarapandian, S.; Maheshwari, T.

doi:10.1007/s10854-021-06713-9

Cited by 23 publications

(7 citation statements)

References 64 publications

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“…Discharge studies have been carried out with a load of 100 kΩ, and the discharge current obtained was 4 mA. Similar reports of OCV 1.93 V was obtained for Tamilisai et al for 40 M wt.% NaAlg: 60 M wt.% Mg(NO 3 ) 2 .6H 2 O [69] and Kiruthiga et al reported an OCV of 2.05 V for 30 M wt % pectin: 70 M wt % MgCl 2 [70] . The biopolymer membrane 40 % CA: 60 % Mg(ClO 4 ) 2 provided a voltage of 1 9…”

Section: Resultssupporting

confidence: 68%

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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Section: Resultssupporting

confidence: 68%

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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“…The diffraction pattern of pure agar shows a peak at 2θ=13 o , a large peak between 15 and 35 of 2θ values, and a shoulder at 2θ= 20 o . Tamilisai et al, [8] discovered the peak for pure agar at 13 o ,20 o ,30 o ,41 o . Electrolytes identified the characteristic diffraction peak for the biopolymer.…”

Section: Resultsmentioning

confidence: 98%

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

R. Sujatha ,C. Shanmugapriya

2023

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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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“…In Figure 4a, wide semicrystalline peaks at 13.26° and 22.90° appears in the NaAlg biopolymer electrolyte which are in concurrence with earlier report. [ 11 ] When Mg(ClO 4 ) 2 is added to NaAlg biopolymer its amorphous/crystalline nature has been altered due to the perturbation created by the salt. In Figure 4(b–d), the obtained peak broadness increases and the intensity of the peak gradually decreases for the prepared biopolymer membrane of 60, 50, and 40 m wt% of NaAlg with 40, 50, and 60 m wt% of Mg(ClO 4 ) 2 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Sodium Alginate Doped with Magnesium Perchlorate as Solid Biopolymer Electrolytes for Energy Storage Applications

Tamilisai

Palanisamy

Selvasekarapandian

et al. 2023

Macro Chemistry & Physics

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This paper deals with development and characterization of the solid biopolymer electrolyte using Sodium alginate as the host biopolymer and magnesium perchlorate used as a doping salt. Membranes are prepared via solution casting technique. Several characterization techniques, such as X-ray and diffraction, Fourier transform infrared spectroscopy, differential scanning calorimetry, AC impedance spectroscopy, linear sweep voltammetry, and transference number measurement are performed to characterize the prepared biopolymer membrane. The highest ionic conductivity 2.41 × 10 −3 S cm −1 is observed for prepared solid biopolymer electrolyte contains 40:60 m wt% of NaAlg:Mg(ClO 4 ) 2 . The electrochemical stability of highest ion conducting biopolymer membrane is observed at 3.62 V. A primary magnesium battery is constructed using the highest ionic conducting biopolymer membrane and the open circuit voltage of the fabricated magnesium battery is found to be 2.0 V.

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Sodium alginate incorporated with magnesium nitrate as a novel solid biopolymer electrolyte for magnesium-ion batteries

Cited by 23 publications

References 64 publications

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

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

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

Sodium Alginate Doped with Magnesium Perchlorate as Solid Biopolymer Electrolytes for Energy Storage Applications

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