초록 |
The thermal properties and electrochemical stabilities of N-ethyl-N-methylmorpholinium bromide ([Mor1,2][Br]), N-butyl-N-methylmorpholinium bromide ([Mor1,4][Br]), N-octyl-N-methylmorpholinium bromide ([Mor1,8][Br]), N-dodecyl-N-methylmorpholinium bromide ([Mor1,12][Br]), and N,N-dihydroxyethylmorpholinium bromide ([DHEMor][Br]) were investigated. All salts were decomposed below approximately 230.00℃ and their melting points were above 100.00℃ except [DHEMor][Br], which melted at 75.17℃. [DHEMor][Br] appeared to possess the most wide liquid-phase range between melting point and decomposing temperature. The electrochemical windows of salts ranged from 3.3V for [Mor1,8][Br] to 3.6V for [Mor1,4][Br] and thus did not show any noticeable variation with cations used for salt synthesis. |