Star-shaped oligo(ethylene glycol) ethers (OEGE) as a new type of plasticizer for polymer gel electrolytes

Improved stability of quasi-solid-state dye-sensitized solar cell based on poly (ethylene oxide)–poly (vinylidene fluoride) polymer-blend electrolytes

“…A gelator is expected to induce important intrinsic modifications in local structure; release mobile charge carriers due to ion dissolution effect and introduce a new path for ion transport through cross-linking effect of gelators [17]. The overall effect leads to an increase in the number of mobile charge carriers and results in an ionic transport behavior resembling that of a liquid system [18]. The chain length of the gelators should be as low as possible to realize sufficient ion mobility and to avoid the crystallization of the gelator within the gel electrolyte [19].…”

Polymer gel electrolytes synthesized by photopolymerization in the presence of star-shaped oligo(ethylene glycol) ethers (OEGE)

“…8 shows, that the ionic conductivity s of the gels containing OEGE-3 730 and OEGE-4 797, respectively, is slightly lower than s of the gels containing EG 11 DME in the temperature range of 15-60 8C as found for the corresponding salt solutions. This is explicable with the worse solvation behaviour of star-shaped OEGE (M!1000 g/ mol) for Li C ions as observed by us by Raman spectroscopic measurements [18].…”

Synthesis of star macromolecules for solid polymer electrolytes

“…At the branching sites, crystallization can be completely frustrated, rendering the polymer amorphous and furthermore better conductivities. According to this strategy, a number of amorphous polymer electrolytes were prepared including star PEO [18], star-shaped oligo(ethylene glycol) methyl ethers [19], and multiarm star polymer [20]. The effects of SM120 and SM750 are not as satisfying as SM400, probably owing to their inappropriate length of side chains.…”