Nanostructure PEO‐Silica Hybrids: A New Class of Additive Material for Composite Polymer Electrolytes

Abstract

Hybrid nanostructure polyethylene oxide (PEO)‐silica hybrids (PSH) prepared by sol‐gel chemistry are utilized as novel nanofiller to fabricate PEO‐based nanocomposite polymer elecytrolytes (NCPEs) by adopting the conventional solvent casting approach. The resulting PSH hybrids are characterized by various techniques followed by their incorporation into NCPEs that result in enhancement in the Li‐ion conductivity and a maximum ionic conductivity of 7.20 × 10−5 S cm−1 is achieved with only 0.25% nanofillers. The temperature dependence conductivity study shows a linear behavior below melting temperature following the Arrhenius equation and shows non‐linear behavior above the melting temperature following the Vogel–Taumann–Fulcher (VTF) equation. Argand plots of various NCPEs both at room temperature and elevated temperature signify the role of various relaxation processes for such type of conducting behavior, which is further supported by dielectric and tangential loss studies. Moreover, X‐ray diffraction and Differential Scanning Calorimetry measurements are carried out to understand the change in polymer crystallinity in the resulting NCPEs and are well in accordance with the conductivity changes.

Review on the recent progress in the nanocomposite polymer electrolytes on the performance of lithium‐ion batteries

“…Further in the 1980s, this instinct paved the way for new applications of polymeric electrolytes including electrochromic and “smart” windows. An enormous amount of research is done with other types of polymers host as well 42,43 . The promising polymer hosts are PVC, PAN, PMMA, and PVDF have been projected as host of polymeric electrolytes.…”

“…An enormous amount of research is done with other types of polymers host as well. 42,43 The promising polymer hosts are PVC, PAN, PMMA, and PVDF have been projected as host of polymeric electrolytes. Apart from these synthetic polymer hosts, natural polymeric electrolytes are being researched.…”

Polyethylene Oxide-Based Composites as Solid-State Polymer Electrolytes for Lithium Metal Batteries: A Mini Review

“…Also, simple organic fillers such as silicane (Mehdi et al, 2017 ; Mohanta et al, 2017 ) and carbonate (He et al, 2017 ) have been successfully introduced into the PEO-based SPEs, improving the ion conductivity and ameliorating the polymer crystallinity. For example, the monosilylated PEO precursor with the loose networks supplies higher segmental motion and amorphous networks, which are beneficial for a significantly enhanced capacity and faster Li-ion transmission (Mohanta et al, 2017 ). By a facile transesterification reaction, the carbonate-linked PEO SPEs could achieve a high yield with intrinsic amorphous nature and low glass transition temperature, which would be beneficial for getting a high ionic conductivity.…”

Design of Polymer‐in‐Salt Electrolyte for Solid State Lithium Battery with Wide Working Temperature Range

“…The inorganic fillers can change the local structure of the PEO matrix to reduce crystallinity and increase the proportion of amorphous regions. [16][17][18][19] Inerting inorganic fillers, for instance, SiO 2 , Al 2 O 3 , ZrO 2 particles have been studied. [20][21][22] Another kind of effective strategy is adding fast ionic conductors (LLZTO, LLTO, LATP, and so forth) as active filler particles.…”

“…In order to solve this problem, it is considered an effective strategy to build composite solid polymer electrolyte (CSPE) by adding inorganic fillers to enhance SPE ionic conductivity. The inorganic fillers can change the local structure of the PEO matrix to reduce crystallinity and increase the proportion of amorphous regions [16–19] . Inerting inorganic fillers, for instance, SiO 2 , Al 2 O 3 , ZrO 2 particles have been studied [20–22] .…”