Preparations and characterizations of cellulose-based composite polymer electrolytes for lithium-air batteries / Mohamad Fariz Mohamad Taib

Mohamad Taib, Mohamad Fariz (2009) Preparations and characterizations of cellulose-based composite polymer electrolytes for lithium-air batteries / Mohamad Fariz Mohamad Taib. [Student Project] (Unpublished)

Abstract

In this study, the liquid electrolytes containing different concentration of lithium triflate (LiCFsSOs) salt were prepared. Impedance spectroscopy tecnique was carried out in frequency range between 100Hz to 1MHz .The optimum electrical conductivity obtained was 3.99x 10' Scm"1 at 0.4M of lithium triflate. This conductivity value was calculated using the bulk resistance value which was obtained from the complex impedance plot. Various weight percentage (wt.%) of cellulose acetate were then added into liquid electrolytes (LE) to obtained the polymer gel electrolytes (PGEs).The highest conductivity of PGE was 5.99X 10"3 Scm"1 at 6.0 wt.% of cellulose acetate (CA). Then, various wt.% of Si02 were further added to increase the viscosity of the PGEs. The highest conductivity of CPE was 4.25X 10"3 Scm"1 at 3.0 wt.% of Si02. Finally, the highest conducting CPE sample was then used as an electrolyte in fabrication of lithiumair cell. The discharging capacity of lithium-air battery obtained was 4.25 mAh.

Metadata

Item Type: Student Project
Creators:
Creators
Email / ID Num.
Mohamad Taib, Mohamad Fariz
UNSPECIFIED
Contributors:
Contribution
Name
Email / ID Num.
UNSPECIFIED
Yahya, Muhd Zu Azhan (Assoc. Prof. Dr.)
UNSPECIFIED
Subjects: Q Science > QC Physics > Electricity and magnetism
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: Polymer electrolytes, Lithium-air batteries, Polymer gel electrolytes (PGEs)
Date: 2009
URI: https://ir.uitm.edu.my/id/eprint/45031
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