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- Title
Investigation on tamarind seed polysaccharide biopolymer electrolyte doped with sodium nitrite and EC plasticizer for primary sodium battery.
- Authors
Maithilee, K; Sathya, P; Selvasekarapandian, S; Chitra, R; Meyvel, S
- Abstract
Solid biopolymer electrolyte based on tamarind seed polysaccharide (TSP) with sodium nitrite (NaNO2) as ionic dopant (0.5–0.8 wt%) and ethylene carbonate (EC) as plasticizer is synthesized by solution casting technique. X-ray diffraction analysis reveals that the amorphous nature of the biopolymer electrolyte increases with the increase of NaNO2 salt and EC plasticizer. The maximum amorphous nature is achieved for the composition 1 g TSP: 0.7 wt% NaNO2: 0.5 wt% EC. The complex formation between the biopolymer electrolyte TSP and NaNO2 is studied using Fourier transform infrared analysis. From differential scanning calorimetry analysis, the glass transition temperature (Tg) of the prepared biopolymer electrolytes are obtained. The maximum ionic conductivity has been found to be 1.49 × 10−3 S cm−1 for 1 g TSP: 0.7 wt% NaNO2: 0.5 wt% EC. The transference number measurement has been done by Wagner's polarization method. A primary sodium battery has been constructed with a configuration sodium metal/1 g TSP: 0.7 wt% NaNO2: 0.5 wt% EC/V2O5, PbO2 and the open-circuit cell potential of 2.47 V is observed.
- Subjects
POLYSACCHARIDES; SODIUM nitrites; BIOPOLYMERS; POLYELECTROLYTES; PLASTICIZERS; IONIC conductivity
- Publication
Bulletin of Materials Science, 2023, Vol 46, Issue 3, p1
- ISSN
0250-4707
- Publication type
Article
- DOI
10.1007/s12034-023-02948-w