Journal
MOLECULES
Volume 26, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/molecules26082139
Keywords
nanocomposites; polymer electrolytes; clay; sodium alginate
Funding
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior-Brasil [001, PNPD20131739-33002045017P6, 1573926]
Ask authors/readers for more resources
Nanocomposite polymer electrolytes were synthesized using sodium alginate and modified montmorillonite clays, and characterized by X-ray diffraction and electrochemical impedance spectroscopy. The results showed that adding clay could improve the conductivity of the electrolytes, with higher clay content promoting the formation of intercalated structures.
Nanocomposite polymer electrolytes (NPEs) were synthesized using sodium alginate (Alg) and either sodium (SCa-3-Na+)- or lithium (SCa-3-Li+)-modified montmorillonite clays. The samples were characterized by structural, optical, and electrical properties. SCa-3-Na+ and SCa-3-Li+ clays' X-ray structural analyses revealed peaks at 2 theta = 7.2 degrees and 6.7 degrees that corresponded to the interlamellar distances of 12.3 and 12.8 angstrom, respectively. Alg-based NPEs X-ray diffractograms showed exfoliated structures for samples with low clay percentages. The increase of clay content promoted the formation of intercalated structures. Electrochemical Impedance Spectroscopy revealed that Alg-based NPEs with 5 wt% of SCa-3-Na+ clay presented the highest conductivity of 1.96 x 10(-2) S/cm(2), and Alg with 10 wt% of SCa-3-Li+ showed conductivity of 1.30 x 10(-2) S/cm(2), both measured at 70 degrees C. From UV-Vis spectroscopy, it was possible to infer that increasing concentration of clay promoted a decrease of the samples' transmittance and, consequently, an increase of their reflectance.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available