Impact of Side Chain Chemistry on Lithium Transport in Mixed Ion-Electron-Conducting Polymers was written by Pace, Gordon;Nordness, Oscar;Asham, Kareem;Clement, Raphaele J.;Segalman, Rachel A.. And the article was included in Chemistry of Materials in 2022.Quality Control of 2-(2-Methoxyethoxy)ethanol This article mentions the following:
Typical design strategies for mixed ion-electron conduction in polymers have focused on overall ionic conductivity, without specificity for anion vs cation conduction. Here, we demonstrate that side chain chem. can be used to control Li+ conductivity in semiconducting polymers. This design principle is significant for applications that require Li+-specific transport, such as Li-ion batteries. We show that a polythiophene functionalized with an ionic liquid side chain demonstrates higher conductivity and lithium transference than a more commonly studied ether-functionalized P3AT derivative Poly(3-(6′-(N-methylimidazolium) hexyl)thiophene TFSI–) (P3HT-Im+TFSI–) can solvate and conduct ions up to salt concentrations of r = 1.0 (where r = [moles of salt]/[moles of monomer]) while achieving an ionic conductivity of ~10-3 S/cm at 80°C and a lithium transference number of 0.36. On the other hand, poly(3-(methoxyethoxyethoxymethyl)thiophene) (P3MEEMT) shows a peak conductivity of ~10-5 S/cm at r = 0.05 and 80°C, with near-zero lithium transport. This work shows that multiple high dielec. moieties can be used to drive ion conduction in semiconducting polymers, but diffuse, cationic side chains such as imidazolium are preferred for Li-ion conduction. In the experiment, the researchers used many compounds, for example, 2-(2-Methoxyethoxy)ethanol (cas: 111-77-3Quality Control of 2-(2-Methoxyethoxy)ethanol).
2-(2-Methoxyethoxy)ethanol (cas: 111-77-3) belongs to ethers. The oxygen atom in ethers are more electronegative than carbon, thus the hydrogens which are alpha to the ethers are more acidic than the simple hydrocarbons. Ethyl ether is an excellent solvent for extractions and for a wide variety of chemical reactions. It is also used as a volatile starting fluid for diesel engines and gasoline engines in cold weather. Dimethyl ether is used as a spray propellant and refrigerant. Methyl t-butyl ether (MTBE) is a gasoline additive that boosts the octane number and reduces the amount of nitrogen-oxide pollutants in the exhaust. The ethers of ethylene glycol are used as solvents and plasticizers.Quality Control of 2-(2-Methoxyethoxy)ethanol
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem