Conductivities of solid polymer electrolyte complexes of alkali salts with polymers of methoxypolyethyleneglycol methacrylates

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

“…At high temperature, above T m of PEO, the conductivity order is σ[100%PEO (600 K)]~σ[86%PEO(600 K)/14%PEO(375)-SiO 2 ] N σ[86% PEO(600 K)/4%PEO(500)/10%SiO 2 ]~σ[90%PEO(600 K)/ 10% N σ[72%PEO(600 K)/28%PEO(375)-SiO 2 . The highest conductivities are achieved for the samples with the least amount of inert SiO 2 , as has been observed previously [5,55]. Arrhenius conductivity plots for the amorphous films prepared using LiClO 4 (O/Li = 8/1), native SiO 2 or PEO(375)-SiO 2 , and either PEO(600 K) and PEO(600 K)/PEO(1 K) or PEO(600 K)/ PEO(500) are shown in Fig.…”

“…Use of low molar mass polyethylene glycol dimethyl ethers (PEGDMEs) as plasticizers (30-40%) in the PEO matrix increased ambient temperature conductivities, but at the cost of significant reduction in the mechanical and interfacial properties [1]. Other approaches to increasing the room temperature (RT) conductivity of polyether electrolytes are by attachment of short-chain PEO oligomers as side chains to flexible [2][3][4][5][6][7][8][9][10] or rigid polymer backbones [11,12], network polyethers [13,14] and inorganic scaffolds [15,16].…”

Lithium-Conducting Polymer Electrolytes for Chemical Power Sources

“…Xia et al [142] studied how the conductivity of solid polyelectrolyte complexes of alkali metal salts NaSCN, NaCF 3 SO 3 , and LiCF 3 SO 3 with polymers derived from methoxypoly(ethylene glycol) methacrylate CH 2 =C(CH 3 )COO(CH 2 3CH 2 O) n CH 3 [n = 8 (PMG-8) and n = 22 (PMG-22)] depend on the temperature and salt concentration. The systems based on copolymers of PMG-22 with polystyrene, like the systems plasticized with propylene carbonate, showed considerably higher conductivity than the systems based on the homopolymers.…”

Sodium ion dynamics in a sulfonate based ionomer system studied by 23Na solid-state nuclear magnetic resonance and impedance spectroscopy

“…Alternative solid electrolyte materials, such as those based on polymers that can operate at ambient temperatures, could resolve these issues. However, compared to lithiumbased materials there have been relatively few studies of sodiumbased polymer electrolytes [13][14][15][16][17][18][19][20].…”