The new room-temperature molten salt was prepared based on LiTFSI[LiNC(SO 2CF 3) 2] with OZO(C 3H 5NO 2) which were not reported in literature. Its thermal and electrochemical properties were studied by differential s...The new room-temperature molten salt was prepared based on LiTFSI[LiNC(SO 2CF 3) 2] with OZO(C 3H 5NO 2) which were not reported in literature. Its thermal and electrochemical properties were studied by differential scanning calorimetry, ac impedance spectroscopy and cyclic voltammertry respectively. The results indicated that the structure symmetry of the molecule was depressed and the extent of charges delocalization was expanded, because of introducing oxygen atom of differential electronegativity in OZO molecule. DSC analysis showed that the LiTFSI-OZO molten salt has the excellent thermal stability and its eutectic temperature is below about 223.15 K. Meanwhile, the conductivity of LiTFSI-OZO molten salt at a molar ratio of 1∶4.5 is 0.75×10 -3 S/cm at 298.15 K and 3.50×10 -3 S/cm at 333.15 K. CV analysis showed that the electrochemical window of the sample is about 4 V.展开更多
The hydrochloride of 1-(1-amino-3-methyl)butyl borate pinacol is prepared by using the isobutylbromide to form the Grignard agent.The product is protected with the pinacol,then reacted with the lithium diisopropylamid...The hydrochloride of 1-(1-amino-3-methyl)butyl borate pinacol is prepared by using the isobutylbromide to form the Grignard agent.The product is protected with the pinacol,then reacted with the lithium diisopropylamide and the anhydrous zinc chloride.Finally,the product is synthesized in the existence of the LHMDS.All the compounds are confirmed by MS and 1H-NMR.展开更多
文摘The new room-temperature molten salt was prepared based on LiTFSI[LiNC(SO 2CF 3) 2] with OZO(C 3H 5NO 2) which were not reported in literature. Its thermal and electrochemical properties were studied by differential scanning calorimetry, ac impedance spectroscopy and cyclic voltammertry respectively. The results indicated that the structure symmetry of the molecule was depressed and the extent of charges delocalization was expanded, because of introducing oxygen atom of differential electronegativity in OZO molecule. DSC analysis showed that the LiTFSI-OZO molten salt has the excellent thermal stability and its eutectic temperature is below about 223.15 K. Meanwhile, the conductivity of LiTFSI-OZO molten salt at a molar ratio of 1∶4.5 is 0.75×10 -3 S/cm at 298.15 K and 3.50×10 -3 S/cm at 333.15 K. CV analysis showed that the electrochemical window of the sample is about 4 V.
文摘The hydrochloride of 1-(1-amino-3-methyl)butyl borate pinacol is prepared by using the isobutylbromide to form the Grignard agent.The product is protected with the pinacol,then reacted with the lithium diisopropylamide and the anhydrous zinc chloride.Finally,the product is synthesized in the existence of the LHMDS.All the compounds are confirmed by MS and 1H-NMR.
