Ionically conductive polymer gel electrolytes consisting of crosslinked methacrylonitrile and organic electrolyte

Abstract

To develop a highly ion-conductive polymer electrolyte, we copolymerized methacrylonitrile (MAN) with ethylene glycol dimethacrylate (EGDMA) in propylene carbonate that contained tetraethylammonium tetrafluoroborate (TEATFB), changing the TEATFB concentration and the MAN/EGDMA molar ratio. We characterized the obtained polymer gel electrolytes with complex impedance analysis and cyclic voltammetry, intending to apply them to electric double-layer capacitors. The ionic conductivities of the polymer gel electrolytes were dependent on the TEATFB concentration, the temperature, and particularly the crosslinking degree. The polymer gel electrolytes in this system exhibited high room-temperature conductivities (Ͼ10 Ϫ3 S/cm). Furthermore, these polymer electrolytes showed good electrochemical stability windows ranging from Ϫ4.0 to ϩ4.0 V versus Ag.

Morphology, thermal, electrical and electrochemical stability of nano aluminium-oxide-filled polyvinyl alcohol composite gel electrolyte

“…Another effect of adding the nanofiller is the narrowing of faradic currents during oxidation and reduction cycles in the stable region. A stable potential window is of great practical importance for applications in batteries and super capacitors as it determines the maximum operating voltage of a capacitor (Kubota et al 2000(Kubota et al , 2002Kim et al 2002). An interesting observation is the appearance of a single oxidation/reduction peak for Figure 9.…”

Electrolyte‐based antistatic plasticizer for soft poly(vinyl chloride) composites

“…At the same plasticizer content, there were more DBP molecules than BMEP or AP molecules to plasticize the PVC molecular chains. Moreover, the coordination effects between the ether oxygen groups and Na + cations in AP also partially weakened the interactions between AP and the PVC molecular chains 15. Furthermore, as shown in Figure 2, the surface resistivity of the PVC/DBP/AP (100/40/20) composites was still able to reach 10 9 Ω/sq orders of magnitude; this showed good comprehensive properties of the composites.…”

“…Gel polymer electrolytes12–15 are novel functional polymer materials that are composed of a polymer, a high‐dielectric‐constant solvent, and alkali metal salts. Gel polymer electrolytes are dimensionally stable and have a high conductivity in the range 10 −3 –10 −4 S/cm.…”

Investigation on Nanocomposite Polymer Gel Electrolyte Films and Their Nanofibers for Electrochemical Devices

“…This feature ascertains improvement in system morphology and electrochemical stability nanocomposite electrolyte fibers in the presence of MWNT fillers. A stable potential window is of great practical importance for applications in batteries and super capacitors (Bhargav et al, 2007;Kubota et al, 2002). Ionically conductive polymer gel electrolytes consisting of crosslinked methacrylonitrile and organic electrolyte.…”