Speakers
Mr
DONALD DEHIIN HILE
(UNIVERSITY OF THE FREE STATE, QWAQWA CAMPUS)
Dr
LEHLOHONOLO FORTUNE KOAO
(UNIVERSITY OF THE FREE STATE, QWAQWA CAMPUS)
Description
The advantages of LiFePO4 nanomaterials for use as positive electrode in lithium ion batteries are their excellent cycle life, structural stability, cost effectiveness and environmental friendliness. Their main limitation however is the low electrical conductivity which can be overcome by synthesizing particles at the nanoscale with homogenous size distribution. This work employs a simple and cost effective method to produce homogenous nanoparticles of lithium iron Phosphate (LiFePO4). The nanoparticles were deposited on Fluorine doped Tin Oxide (FTO) glass substrates at temperatures of 25, 60, 70, 80, 90, and 100 oC using chemical bath deposition (CBD) method. The surface structure, morphology and electrochemical analyses were carried out on the deposited films, studied and reported. The morphology of the deposited films was studied using scanning electron microscopy (SEM) and the films exhibited homogeneous average crystal sizes. X-ray diffractometry (XRD) studies revealed highly polycrystalized structures, which increased with deposition temperature. The crystal grain sizes were calculated from the XRD results using Crystallite Size and D.K. Shukla Crystal Size Calculation software. The average crystal sizes of the deposited films were found increasing from 121-153nm with increased deposition temperature. The charge-discharge test was carried out using cyclic voltammetry and it showed an increased specific charge capacity up to 153mAhg-1 with increased temperature of deposition. The work concluded that deposition temperature has great influence on the morphology and electrochemical properties of the thin films.
Level for award<br> (Hons, MSc, <br> PhD, N/A)?
N/A
Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?
Yes
Main supervisor (name and email)<br>and his / her institution
Dr Koao Lehlohonolo Fortune.
E-mail: koaolf@ufs.ac.za
Apply to be<br> considered for a student <br> award (Yes / No)?
No
Primary authors
Mr
DONALD DEHIIN HILE
(UNIVERSITY OF THE FREE STATE, QWAQWA CAMPUS)
Dr
LEHLOHONOLO FORTUNE KOAO
(UNIVERSITY OF THE FREE STATE, QWAQWA CAMPUS)
Co-authors
Dr
IORKYAA AHEMEN
(UNIVERSITY OF THE FREE STATE, QWAQWA CAMPUS)
Dr
KOMAHELO GEORGE TSABALALA
(UNIVERSITY OF THE FREE STATE, QWAQWA, CAMPUS)
Dr
SETUMO VICTOR MOTLOUNG
(SEFAKO MAKGATHO HEALTH SCIENCE UNIVERSITY, MEDUNSA)
