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Nanocomposite Polymer Electrolytes of Sodium Alginate and Montmorillonite Clay

Gellan gum-clay nanocomposite polymer electrolytes with improved ionic conducti...

Nanocomposite polymer electrolytes of sodium alginate and montmorillonite clay

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 2θ = 7.2° and 6.7° that corresponded to ...

Gellan-gum and LiTFSI-Based solid polymer electrolytes for electrochromic devices

It has been long recognized that solid polymer electrolytes (SPEs) are potentially interesting for solid-state electrochemical devices. Gellan gum (Ge)-based SPEs, plasticized with glycerol (Gly) and doped with lithium bis(trifluoromethanesulfone)imide (LiTFSI) were prepared by the solvent casting technique, and their properties were evaluated. LiTFSI-based SPE systems exhibit, on the average, higher conductivi...

Study of ionically conducting nanocomposites for reflective electrochromic devices

Insight on polymer electrolytes for electrochemical devices applications

Polymer electrolytes (PEs) are of much attention as potential electrolytes of great technological relevance for solid-state electrochemistry, in particular for their possible practical application in devices such as batteries, supercapacitors, fuel cells, smart windows, sensors, and solar cells, among others. Generically, solid polymer electrolytes (SPEs) are mixtures of salts with basic polymers, such as poly(...

Study of ionically conducting nanocomposites for reflective electrochromic devices

New, nanocomposite, and ionically conducting membranes have been developed by using plasticized and crosslinked gelatin and clay (montmorillonite SCa-3) with concentration of 1-20 wt%. The samples were studied by FTIR, X-ray diffraction, UV-Vis (transmittance and reflectance), CW-EPR, HYSCORE, and ionic conductivity properties. The obtained results have revealed that the incorporation of clay has promoted chang...

Optical properties of thin films and electrochromic devices

Electrochromic devices (ECDs) are electrochemical cells composed of thin films and electrolyte that have a property to change the color of transmitted light upon applied potential and, consequently, altering their transmittance and reflectance. This property is useful not only for the display industry but also for windows in buildings because it can promote savings of energy spent on air conditioning and lighti...

Green polymer electrolytes of chitosan doped with erbium triflate

Green Solid Polymer Electrolytes (SPEs) containing Er3+ ions have been prepared by solvent casting process. Chitosan was used as host polymer and the trivalent cations, as erbium triflate (Er(CF3SO3)3), have been incorporated into the matrix. The thermogravimetric analysis were used to evaluate the thermal stability of the electrolytes and the minimum onset decomposition temperature was 139ºC. Morphology analys...

Binary Ce(III) and Li(I) triflate salt composition for solid polymer electrolytes

This study describes the results of the characterization of solid polymer electrolytes using chitosan matrix plasticized with glycerol and doped with cerium and lithium triflates binary salt composition. The electrolytes were prepared by solvent casting method and characterized by thermal analysis (thermogravimetric analysis - TGA and differential scanning calorimetry - DSC), impedance measurements, X-ray diffr...