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- Title
Studies on ionic liquid-based corn starch biopolymer electrolytes coupling with high ionic transport number.
- Authors
Liew, Chiam-Wen; Ramesh, S.
- Abstract
Biopolymer electrolytes containing corn starch, lithium hexafluorophosphate (LiPF 6) and ionic liquid 1-butyl-3-methylimidazolium trifluoromethanesulfonate (BmImTf) were prepared by solution casting technique. The ionic conductivity was found to increase with increasing ionic liquid concentration. Upon doping with 80 wt% of BmImTf, the ionic conductivity increased by three orders of magnitude. The highest ionic conductivity of (3.21 ± 0.01) × 10 −4 S cm −1 was achieved at ambient temperature. The complexation between corn starch, LiPF 6 and BmImTf was further proven in attenuated total reflectance-Fourier transform infrared findings. The highest conducting biopolymer electrolyte was stable up to 230 °C, as proven in thermogravimetric analysis.
- Subjects
IONIC liquids; CORNSTARCH; BIOPOLYMERS; ELECTROLYTES; COUPLING agents (Chemistry); TRANSFERENCE number
- Publication
Cellulose, 2013, Vol 20, Issue 6, p3227
- ISSN
0969-0239
- Publication type
Article
- DOI
10.1007/s10570-013-0079-0