Effect of carbon coating methods on structural characteristics and electrochemical properties of carbon-coated lithium iron phosphate
Journal article, 2014

The potential of LiFePO4 as cathode material has not been fully exploited due to its intrinsic poor electronic and ionic conductivities. Attempts have been made to improve these properties of which coating of the active carbon on the particle surface is the most viable method so far. Phase-pure LiFePO4 and two LiFePO4/C composites were synthesized by mechanical activation process employing two different methods: (i) direct addition of acetylene black carbon and (ii) addition of sucrose as carbon precursor. The samples were well characterized by various techniques like elemental analysis, Brunauer-Emmett-Teller (BET) method, scanning electron microscopy (SEM), X-ray powder diffraction (XRD), and Raman spectroscopy to establish their composition, morphology, particle size and surface area. The structure of these samples is investigated as olivine structure space group Prima by X-ray powder diffraction. Transmission electron microscopy (TEM) confirms that the carbon nanocoating on the LiFePO4 particles has no visible dislocations and fractures. The electrochemical performance of LiFePO4/C is significantly affected by the nature of the carbon nanocoating, which in turn is affected by the choice of synthesis method.


Jae-Kwang Kim

Chalmers, Applied Physics, Condensed Matter Physics

D. S. Kim

Gyeongsang National University

Du Hyun Lim

Chalmers, Applied Physics, Condensed Matter Physics

Aleksandar Matic

Chalmers, Applied Physics, Condensed Matter Physics

G. S. Chauhan

Himachal Pradesh University

J. H. Ahn

Gyeongsang National University

Solid State Ionics

0167-2738 (ISSN)

Vol. 262 25-29

Driving Forces

Sustainable development

Areas of Advance


Materials Science

Subject Categories

Condensed Matter Physics



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