Effect of NiO nanofiller concentration on the properties of PEO-NiO-LiClO4 composite polymer electrolyte

Abstract

Composite polymer electrolyte films comprising polyethylene oxide (PEO) as the polymer host, LiClO 4 as the dopant, and NiO nanoparticle as the inorganic filler was prepared by solution casting technique. NiO inorganic filler was synthesized via sol-gel method. The effect of NiO filler on the ionic conductivity, structure, and morphology of PEO-LiClO 4 -based composite polymer electrolyte was investigated by AC impedance spectroscopy, X-ray diffraction, and scanning electron microscopy, respectively. It was observed that the conductivity of the electrolyte increases with NiO concentration. The highest room temperature conductivity of the electrolyte was 7.4×10 −4 S cm −1 at 10 wt.% NiO. The observation on structure shows the highest conductivity appears in amorphous phase. This result has been supported by surface morphology analysis showing that the NiO filler are well distributed in the samples. As a conclusion, the addition of NiO nanofiller improves the conductivity of PEO-LiClO 4 composite polymer electrolyte.

Improved electrical properties of Fe nanofiller impregnated PEO + PVP:Li+ blended polymer electrolytes for lithium battery applications

“…This could be a common occurrence for PEO-based electrolytes prepared by solution casting method. It shows the presence of PEO crystalline phase [28]. A dramatic improvement of surface morphology from rough surface to smooth surface is achieved by doping with lithium and as shown in Fig.…”

Preparation and characterization of new nanocomposite polymer films containing NiO nanofillers

“…The room‐temperature conductivity values of the nanocomposites prepared up to now are between 10 −9 and 10 −3 depending on the types of polymer, salt, and nanofiller used . The first PEO‐LiClO 4 polymer electrolyte prepared by the solution‐casting technique in NiO was reported by Fahmi et al ., and the room‐temperature conductivity of the electrolyte was measured as 7.4 × 10 −4 S cm −1 at 10 wt % NiO. Similarly, Rajasudha et al .…”

Three‐Dimensional Anionic Cyclodextrin‐Based Covalent Organic Frameworks

“…To the best of our knowledge,this value is among the highest conductivities for all reported crystalline porous materials (e.g.,C OFs and MOFs) [13a,16] and conventional polymer electrolytes with/without fillers (Figure 2b). [17] Thec onductivity even rivals those of gel polymer electrolytes with the advantage of aw ell-defined structure and better thermal stability. [18] Ther apid transport of Li ions through the CD-COF-Li can be attributed to the flexible and dynamic nature of CD,t he anionic feature of the network derived from the spiroborate linkage,a sw ell as the high capability for entrapping the electrolytes in the confined channels (Figure 2d).…”

“…TheL iPF 6 loading in CD-COF-Li was 20 wt % according to ICP-MS and elemental analysis.T he Li ion conductivity of the impregnated CD-COF-Li was assessed by alternating current (ac) impedance spectroscopy with stainless-steel electrodes at temperatures from 30 to 70 8 8C ( Figure S9). [17] Thec onductivity even rivals those of gel polymer electrolytes with the advantage of aw ell-defined structure and better thermal stability. In contrast, pellets prepared in the same way but from pristine g-CD showed no Nyquist behavior,a nd this phenomenon demonstrates the vital role of well-defined channels in the conduction of ions.T he ionic conductivity of the material was calculated to be 2.7 mS cm À1 at 30 8 8Cf rom the Nyquist plots.…”