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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/100/13986

Title: Structural, dielectric, and conductivity studies of yttrium-doped LiNiPO(4) cathode materials
Authors: PRABU, M
SELVASEKARAPANDIAN, S
KULKARNI, AR
KARTHIKEYAN, S
HIRANKUMAR, G
SANJEEVIRAJA, C
Keywords: LITHIUM-ION BATTERIES
ELECTROCHEMICAL PROPERTIES
POSITIVE-ELECTRODE
PECHINI METHOD
LIFEPO4
PERFORMANCE
BEHAVIOR
CELLS
COPRECIPITATION
ZINC
Issue Date: 2011
Publisher: SPRINGER HEIDELBERG
Citation: IONICS,17(3)201-207
Abstract: Olivine-structured pure LiNiPO(4) and yttrium-doped LiNiPO(4) have been synthesized by a Pechini-type polymerizable precursor method. Compound formation temperature is confirmed from thermogravimetry to differential thermal analysis. Powder X-ray diffraction pattern confirmed the formation of phase pure LiNiPO(4) compound with an orthorhombic structure with fine crystallite size. Presence of preferred local cation environment is understood from Fourier transform infrared spectroscopy (FTIR) studies. XRD and FTIR studies show that doped yttrium ion entered in the lattice of LiNiPO(4.) It has been found that the ionic conductivity of LiNiPO(4) is enhanced by around two orders of magnitude by doping yttrium. Dielectric spectra show the decrease in dielectric constant with increase in frequency. Dielectric loss spectra reveal that dc conduction contribution predominates in the sample.
URI: http://dx.doi.org/10.1007/s11581-011-0535-5
http://dspace.library.iitb.ac.in/jspui/handle/100/13986
ISSN: 0947-7047
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