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Structural and conductivity studies of LiNi0.5Mn0.5O2 cathode materials for lithium-ion batteries

Open Access
|Jun 2016

Figures & Tables

Fig. 1

XRD pattern of LiNi0.5Mn0.5O2 prepared by sol-gel method.
XRD pattern of LiNi0.5Mn0.5O2 prepared by sol-gel method.

Fig. 2

FESEM image of LiNi0.5Mn0.5O2 powder.
FESEM image of LiNi0.5Mn0.5O2 powder.

Fig. 3

FT-IR graph of LiNi0.5Mn0.5O2 sample.
FT-IR graph of LiNi0.5Mn0.5O2 sample.

Fig. 4

Nyquist plots for LiNi0.5Mn0.5O2 material at different temperatures.
Nyquist plots for LiNi0.5Mn0.5O2 material at different temperatures.

Fig. 5

(a) real and (b) imaginary part of impedance of LiNi0.5Mn0.5O2 material as a function of frequency at different temperatures.
(a) real and (b) imaginary part of impedance of LiNi0.5Mn0.5O2 material as a function of frequency at different temperatures.

Fig. 6

Variation of AC conductivity of LiNi0.5Mn0.5O2 material as a function of frequency at different temperatures.
Variation of AC conductivity of LiNi0.5Mn0.5O2 material as a function of frequency at different temperatures.

Fig. 7

Arrhenius plots of AC conductivity for LiNi0.5Mn0.5O2 material.
Arrhenius plots of AC conductivity for LiNi0.5Mn0.5O2 material.

Fig. 8

Frequency variation of dielectric constant of LiNi0.5Mn0.5O2 material at different temperatures.
Frequency variation of dielectric constant of LiNi0.5Mn0.5O2 material at different temperatures.

Fig. 9

(a) and (b): real and imaginary part of modulus for LiNi0.5Mn0.5O2 material as a function of frequency at different temperatures.
(a) and (b): real and imaginary part of modulus for LiNi0.5Mn0.5O2 material as a function of frequency at different temperatures.

AC conductivity values of LiNi0_5Mn0_5O2 sample_

Temperature [°C]AC conductivity [S/cm]
LiNi0.5Mn0.5O2
302.54×10−07
404.24×10−07
506.87×10−07
601.03×10−06
701.47×10−06
801.78×10−06
903.84×10−06
1004.75 × 10−06
1106.54 × 10−06
1203.52 × 10−06

FT-IR wavenumbers variation of LiNi0_5Mn0_5O2 sample_

SourceWavenumbers [cm−1]
authors421.4644477.4024512.0154615.248
[37]474532597

Lattice parameter, unit cell volume, I003/I104 and R-factor of LiNi0_5Mn0_5O2 sample_

Compounda [Å]c [Å]c/aCell volume [Å]3I003/I104R-factor ((I006+I102)/I101)Crystallite size [nm]
LiNi0.5Mn0.5O22.879814.34064.9797102.99821.48910.205981.9526
LiNi0.5Mn0.5O2[25, 26]2.88714.2624.94118.87
DOI: https://doi.org/10.1515/msp-2016-0038 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
Language: English
Page range: 404 - 411
Submitted on: Nov 12, 2015
Accepted on: Jan 24, 2016
Published on: Jun 18, 2016
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2016 N. Murali, K. Vijaya babu, K. Ephraim babu, V. Veeraiah, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.