Preparation and characterization of composite electrolytes based on PEO(375)-grafted fumed silica

The effects of SiO 2 and TiO 2 nanofillers on structural and electrochemical properties of poly(ethylene oxide)–EMIHSO 4 electrolytes

“…semi-crystalline and amorphous states is within the range reported for PEO-based electrolytes [18,19,35,36]. The addition of SiO 2 and TiO 2 fillers decreased the E a of PEO-EMIHSO 4 at temperatures below melting point which indicates an enhanced ionic conduction in filler-containing PEO-EMIHSO 4 .…”

“…A similar trendfor PEO-based electrolytes was reported in [18,35,37]. In amorphous state, the inert nanofillers may restrict the chain motion or block the ion transport [11,19,38], which explains the slightly higher activation energy of the ionic conduction for PEO-EMIHSO 4 -SiO 2 electrolytes. While a similar effect is expected for PEO-EMIHSO 4 -TiO 2 , the higher dielectric constant of TiO 2 may promote the ionic conduction, resulting in a slightly lower E a .The trends in Figure 2 imply that TiO 2 and SiO 2 fillers affect the ionic dissociation and the ion transport in PEO-EMIHSO 4 differently, especially in the amorphous phase.…”

“…Agrawal et al and Pandey et al showed that the crystallinity of PEO-NH 4 SCN and PEO-NH 4 HSO 4 decreased with the addition of nano-sized SiO 2 [17,18]. However, Zhang et al reported that nano-sized fumed SiO 2 increased the glass transition temperature, but had no effect on either crystallinity or conductivity of PEO-LiClO 4 [19]. In another study of PEO-LiClO 4 with various fillers including micro-sized fumed SiO 2 and TiO 2 , Choi et al…”

FTIR Studies on PMMA‐LiNO3 Polymer Electrolyte

“…Solid state lithium ion cells utilize solid electrolytes instead of more traditional liquid or gel electrolyte materials . Solvent‐free conditions, simple processing strategies, and wide electrochemical stability windows are the major advantages of SPEs . They can also act as separators in rechargeable cells, eliminating the necessity for using alternate separator materials.…”

Effect of Nano Filler on Conductivity in PEO-PMMA-LiClO 4 Polymer Electrolyte

“…SPE offers many advantages, such as high durability, high flexibility and low reactivity towards the electrodes. These eliminate the problems of corrosive solvent leakage and harmful gas for above ambient temperature operations and reduce packaging cost as well as improve selflife of the lithium metal electrodes [6][7]. Several researchers have investigated a host of polymers e.g.…”