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Effect of magnesium substitution on structural and dielectric properties of LiNiPO4 Cover

Effect of magnesium substitution on structural and dielectric properties of LiNiPO4

Materials Science-Poland
Volume 35 (2017): Issue 1 (March 2017)
By: K. Anand,  B. Ramamurthy,  V. Veeraiah and  K. Vijaya Babu  
Open Access
|Feb 2017

Figures & Tables

XRD spectra of LiNi1–xMgxPO4 (x = 0, 0.05, 0.1 and 0.15).
XRD spectra of LiNi1–xMgxPO4 (x = 0, 0.05, 0.1 and 0.15).
SEM image of LiNi1–xMgxPO4 (x = 0, 0.05, 0.1 and 0.15); (a) LiNiPO4; (b) LiNi0.95Mg0.05PO4; (c) LiNi0.90Mg0.10PO4; (d) LiNi0.85Mg0.15PO4.
SEM image of LiNi1–xMgxPO4 (x = 0, 0.05, 0.1 and 0.15); (a) LiNiPO4; (b) LiNi0.95Mg0.05PO4; (c) LiNi0.90Mg0.10PO4; (d) LiNi0.85Mg0.15PO4.
EDS spectra for LiNi1–xMgxPO4 (x = 0, 0.05, 0.1 and 0.15); (a) LiNiPO4; (b) LiNi0.95Mg0.05PO4; (c) LiNi0.90Mg0.10PO4; (d) LiNi0.85Mg0.15PO4.
EDS spectra for LiNi1–xMgxPO4 (x = 0, 0.05, 0.1 and 0.15); (a) LiNiPO4; (b) LiNi0.95Mg0.05PO4; (c) LiNi0.90Mg0.10PO4; (d) LiNi0.85Mg0.15PO4.
FT-IR spectra for LiNi1–xMgxPO4 (x = 0, 0.05, 0.1 and 0.15).
FT-IR spectra for LiNi1–xMgxPO4 (x = 0, 0.05, 0.1 and 0.15).
Nyquist plots for the compounds LiNi1–xMgxPO4 (a) x = 0, (b) x = 0.05, (c) x = 0.1, (d) x = 0.15.
Nyquist plots for the compounds LiNi1–xMgxPO4 (a) x = 0, (b) x = 0.05, (c) x = 0.1, (d) x = 0.15.
Variation of Z′ with frequency for the compounds LiNi1–xMgxPO4 (a) x = 0, (b) x = 0.05, (c) x = 0.1, (d) x = 0.15.
Variation of Z′ with frequency for the compounds LiNi1–xMgxPO4 (a) x = 0, (b) x = 0.05, (c) x = 0.1, (d) x = 0.15.
Variation of Z″ with frequency for the compounds LiNi1–xMgxPO4 (a) x = 0, (b) x = 0.05, (c) x = 0.1, (d) x = 0.15.
Variation of Z″ with frequency for the compounds LiNi1–xMgxPO4 (a) x = 0, (b) x = 0.05, (c) x = 0.1, (d) x = 0.15.
Variation of real part of dielectric permittivity (ε′) with frequency for the compounds LiNi1–xMgxPO4 (a) x = 0, (b) x = 0.05, (c) x = 0.1, (d) x = 0.15.
Variation of real part of dielectric permittivity (ε′) with frequency for the compounds LiNi1–xMgxPO4 (a) x = 0, (b) x = 0.05, (c) x = 0.1, (d) x = 0.15.
Variation of imaginary part of dielectric permittivity (ε″) with frequency for the compounds LiNi1–xMgxPO4 (a) x = 0, (b) x = 0.05, (c) x = 0.1, (d) x = 0.15.
Variation of imaginary part of dielectric permittivity (ε″) with frequency for the compounds LiNi1–xMgxPO4 (a) x = 0, (b) x = 0.05, (c) x = 0.1, (d) x = 0.15.
Variation of tanδ with frequency for the compounds LiNi1–xMgxPO4 (a) x = 0, (b) x = 0.05, (c) x = 0.1, (d) x = 0.15.
Variation of tanδ with frequency for the compounds LiNi1–xMgxPO4 (a) x = 0, (b) x = 0.05, (c) x = 0.1, (d) x = 0.15.
Variation of AC conductivity with frequency for the compounds LiNi1–xMgxPO4 (a) x = 0, (b) x = 0.05, (c) x = 0.1, (d) x = 0.15.
Variation of AC conductivity with frequency for the compounds LiNi1–xMgxPO4 (a) x = 0, (b) x = 0.05, (c) x = 0.1, (d) x = 0.15.
Variation of M′ with frequency for the compounds LiNi1–xMgxPO4 (a) x = 0, (b) x = 0.05, (c) x = 0.1, (d) x = 0.15.
Variation of M′ with frequency for the compounds LiNi1–xMgxPO4 (a) x = 0, (b) x = 0.05, (c) x = 0.1, (d) x = 0.15.
Arrhenius plots for LiNi1–xMgxPO4 (a) x = 0, (b) x = 0.05, (c) x = 0.1, (d) x = 0.15.
Arrhenius plots for LiNi1–xMgxPO4 (a) x = 0, (b) x = 0.05, (c) x = 0.1, (d) x = 0.15.

Vibrational spectra data (cm–1) and band assignments in LiNi1–xMgxPO4(x = 0, 0_05, 0_1 and 0_15)_

Infrared wave number [cm–1]
x = 0x = 0.05x = 0.1x = 0.15Assignment
477457446446v (Li–O)
525525529527v (Ni–O)
547548548548v2 (PO4)3–
580569568568v2 (PO4)3–
653649649649v4 (PO4)3–
940937949949v1 (PO4)3–
1057106010641035v3 (PO4)3–
1100109110901094v3 (PO4)3–
1150113911401134v3 (PO4)3–

Activation energies for different compounds at 100 kHz_

CompoundAC conductivity [S/cm]Activation energy [eV]
LiNiPO49.47 × 10–100.47
LiNi0.95Mg0.05PO42.95 × 10–90.56
LiNi0.90Mg0.10PO49.62 × 10–100.52
LiNi0.85Mg0.15PO49.80 × 10–100.66

Lattice parameters, space group and cell volume for different compounds_

Compounda[Å]b [Å]c [Å]Space groupCell volume [Å]3
LiNiPO410.03455.85244.6629Pnma273.8411
LiNi0.95Mg0.05PO410.03415.87624.6669Pnma275.1785
LiNi0.90Mg0.10PO410.05335.85614.6554Pnma274.0853
LiNi0.85Mg0.15PO410.04015.85984.6682Pnma275.1785
DOI: https://doi.org/10.1515/msp-2017-0008 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
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Language: English
Page range: 66 - 80
Submitted on: Mar 31, 2016
Accepted on: Nov 28, 2016
Published on: Feb 24, 2017
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
cathode materials,
XRD,
FT-IR,
modulus analysis
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2017 K. Anand, B. Ramamurthy, V. Veeraiah, K. Vijaya Babu, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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