Electrochemical and thermal properties of polymer-layered silicate nanocomposites for energy storage applications

Abstract

The present work gives an outline of electrochemical and thermal properties of single ion conducting polymer-layered silicate nanocomposites. High resolution transmission electron microscopy and X-ray diffraction studies prove the intercalation of poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP) inside the interlayer galleries of montmorillonite (MMT) silicate. Scanning electron microscopy reveals porosity increases with increasing MMT concentration. Room temperature ionic conductivity of 1.2 × 10−5 S cm−1 has been obtained. Electrochemical stability increases with increasing MMT concentration attaining the highest value of 4.2 V at 20 wt.% of MMT. Thermal properties substantiate decomposition temperature in the range of 300–374°C for the nanocomposites.

Dielectric properties of nano‐MMT and graphene quantum dots embedded poly (vinylidene fluoride‐co‐hexafluoropropylene) nanocomposite films

“…The pure MMT starts decomposing from 254 C and after the addition of MMT into the polymer the decomposition temperatures of the PVDF-HFP/MMT nanocomposite were decreased which is attributed to the good interaction between PVDF-HFP and MMT. 37 The degradation of the PVDF-HFP/MMT/GQDs nanocomposite films start from $300 C up to $476 C and the corresponding weight loss was about 56.51%. As a result, the thermal stability of PVDF-HFP/MMT/GQDs nanocomposite films was decreased in this temperature range as compared to the pure PVDF-HFP and PVDF-HFP/GQDs nanocomposites.…”

Ferrite-Supported Nanocomposite Polymers for Emerging Organic and Inorganic Pollutants Removal from Wastewater: A Review

“…When the appropriate number of layered silicates is spread in the polymer matrix, a considerable surface area is created, which may be employed for water purification. , Polymer/layered nanocomposite materials may be divided into three types: (1) intercalated nanocomposites, (2) flocculated nanocomposites, and (3) exfoliated nanocomposites . Polymer silicate nanocomposites represent a novel method for creating single-ion-conducting polymer electrolytes with improved electrical and thermal properties. , PSNs are materials composed of molecularly distributed clay granules embedded in a polymer nanoscale matrix …”

“…113,114 PSNs are materials composed of molecularly distributed clay granules embedded in a polymer nanoscale matrix. 115 3.1.5. Polymer−Polymer Nanocomposites.…”

Morphology and physico-mechanical properties of poly (methyl methacrylate)/polystyrene/polypropylene ternary polymer blend and its nanocomposites with organoclay: The effect of nature of organoclay and method of preparation

“…Organoclay-based nanocomposites have received increasing attention over the last two decades due to the unique and outstanding capability of these nanoparticles in enhancing barrier properties and flame retardancy, as well as physical and mechanical properties. [21][22][23][24][25][26][27] In fact, these distinctive properties are directly linked with the microstructure of the nanocomposites, where the state of dispersion/exfoliation is predominantly determined by the interfacial interaction between organoclays and polymer matrices. [28][29][30][31][32][33] To the best of our knowledge, the effect of organoclays nature (C15A and C30B) and their mixing order on the morphology of ternary blends with core-shell type morphology has not been investigated so far.…”