The electrolyte conductivity and electrochemical stability are key parameters in selecting suitable electrolyte in order to fabricate lithium battery. Cellulose acetate (CA) was used as the polymer, Si0₂ as the filler and LiBF4 was dissolved in 20ml DMF as lithium salt and solvent respectively. Gel electrolytes with various concentrations of LiBF4 and various weight percentages of CA and Si0₂ have been prepared. The conductivity was studied using complex impedance spectroscopy to investigate ionic conductivities in DMF-L1BF4,DMF-LiBF4-CA and DMF-LiBF4-CA-Si0₂ electrolyte systems. The highest conductivity was found at 9.0M LiBF4 in the DMF-LiBF4-CA systems with conductivity of (8.01X10-3 + 0.00) Scm-1. In the DMF-LiBF4-CA system with composition of 2 wt. % CA exhibited the highest conductivity of (7.51X1-3 + 2.00X1-4) Scm-1, and the value was enhanced to (7.88X10-3 + 2.20X10-4) Scm-1 when 0.1 wt. % of Si0₂ was added.
| Item Type: | Student Project |
|---|---|
| Creators: | Creators Email / ID Num. Che Mustapha, Mohd Afiza UNSPECIFIED |
| Contributors: | Contribution Name Email / ID Num. UNSPECIFIED Marwan Ali, Ab Malik (Dr) UNSPECIFIED |
| Subjects: | Q Science > QC Physics > Nuclear and particle physics. Atomic energy. Radioactivity Q Science > QC Physics > Nuclear and particle physics. Atomic energy. Radioactivity > Lithium |
| Divisions: | Universiti Teknologi MARA, Shah Alam > Faculty of Applied Sciences |
| Programme: | Bachelor of Science (Hons.) Physics |
| Keywords: | Gel polymer, Cellulose acetate, Lithium batteries |
| Date: | 2008 |
| URI: | https://ir.uitm.edu.my/id/eprint/44491 |
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