Kinetic Model of LiFePO4 Formation Using Non-Isothermal Thermogravimetric Analysis

Abdul Halim  -  Department of Chemical Engineering, Sepuluh Nopember Institute of Technology, Kampus Sukolilo, Surabaya 60111, Indonesia
*Widiyatuti Widiyastuti  -  Department of Chemical Engineering, Sepuluh Nopember Institute of Technology, Kampus Sukolilo, Surabaya 60111, Indonesia
Heru Setyawan  -  Department of Chemical Engineering, Sepuluh Nopember Institute of Technology, Kampus Sukolilo, Surabaya 60111, Indonesia
Sugeng Winardi  -  Department of Chemical Engineering, Sepuluh Nopember Institute of Technology, Kampus Sukolilo, Surabaya 60111, Indonesia
Received: 19 Sep 2013; Published: 12 Mar 2014.
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Abstract

The formation reaction of LiFePO4 from decomposition of precursors LiOH, FeSO4.7H2O and (NH4)2HPO4 with mol ratio of Li:Fe:P=1:1:1 was investigated. The experiment was carried out by thermogravimetric differential thermal analysis (TG-DTA) method using nitrogen as atmosfer at a constant heating rate to obtain kinetic constant parameters. Several heating rates were selected, there are 5, 7, 10, 15, 17.5, 22.5 and 25 °C/min. Activation energy, pre-exponential factor and reaction order were taken using Kissinger method and obtained respectively 56.086 kJ/mol, 6.95×108 min-1, and 1.058. Based on fitting result between reaction model and experiment were obtained that reaction obeyed the three dimension diffusion model. © 2014 BCREC UNDIP. All rights reserved

Received: 19th September 2013; Revised: 9th December 2013; Accepted: 23rd January 2014

[How to Cite: Halim, A., Widiyastuti, W., Setyawan, H., Winardi, S. (2014). Kinetic of LiFePO4 For-mation Using Non-isothermal Thermogravimetric Analysis. Bulletin of Chemical Reaction Engineering & Catalysis, 9 (1): 60-65. (doi:10.9767/bcrec.9.1.5508.60-65)]

[Permalink/DOI: http://dx.doi.org/10.9767/bcrec.9.1.5508.60-65]

 

Keywords: LiFePO4; Thermogravimetric Differential Thermal Analysis; Kinetics Reaction

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Section: Original Research Articles
Language: EN
In 2014: BCREC Volume 9 Issue 1 Year 2014 (SCOPUS Indexed, April 2014)
Statistics: 1045 1268
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