Physical and electrochemical properties of doped lithium iron phosphate electrodes

Stoichiometric and non-stoichiometric Mg-doped lithium iron phosphates were synthesised via spray-pyrolysis, followed by sintering at high temperature for crystallization. The spray pyrolysis process allows the homogeneous mixing of the ingredient reactants at atomic level. The electronic conductivi...

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Bibliographic Details
Published in:Electrochimica acta 2004-11, Vol.50 (2), p.443-447
Main Authors: Wang, G.X., Bewlay, S.L., Konstantinov, K., Liu, H.K., Dou, S.X., Ahn, J.-H.
Format: Article
Language:English
Subjects:
Applied sciences
Cathode
Chemistry
Corrosion
Corrosion mechanisms
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Electrochemistry
Electronic conductivity
Exact sciences and technology
General and physical chemistry
Lithium iron phosphates
Lithium-ion batteries
Metals. Metallurgy
Supervalent ion doping
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Summary:Stoichiometric and non-stoichiometric Mg-doped lithium iron phosphates were synthesised via spray-pyrolysis, followed by sintering at high temperature for crystallization. The spray pyrolysis process allows the homogeneous mixing of the ingredient reactants at atomic level. The electronic conductivities of the Mg-doped lithium iron phosphates have been drastically improved by 4 orders of magnitude, comparing to the undoped LiFePO 4. The electrochemical properties of as-prepared lithium iron phosphates were systematically measured by cyclic voltammetry and constant current charge/discharge cycling tests.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2004.04.047