期刊
CARBOHYDRATE POLYMERS
卷 87, 期 1, 页码 701-706出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2011.08.047
关键词
Corn starch; Deep eutectic solvent; Ionic conductivity; Transit site; Neutral ion multiple
资金
- Universiti Malaya [UMRG: RG140-11AFR]
A series of polymer electrolytes composed of corn starch (CS), lithium bis(trifluoromethanesulfonyl)imide (LITFSI) and deep eutectic solvent (DES) were fabricated by solution casting technique. The DES was synthesized from a mixture of choline chloride and urea at a molar ratio of 1:2. The addition of DES is crucial in enhancing the room temperature ionic conductivity by increasing the amorphous elastomeric phase in CS:LITFSI matrix. The ionic transport mechanism is improved and appreciable amount of ion conducting polymer electrolytes is produced. The highest ionic conductivity achieved for the polymer electrolyte composition CS: [SITS!: DES (14 wt.%:6 wt.%:80 wt.%) is 1.04 x 10(-3) S cm(-1). The anomalies that were observed with the addition of DES upon formation of neutral ion multiples were visually revealed by the SEM micrographs. The possible dipole-dipole interaction between the constituents was visualized by the FTIR spectroscopy upon change in cage peaks. (C) 2011 Elsevier Ltd. All rights reserved.
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