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Structural, Morphological and Impedance Spectroscopic Analyses of Nano Li(Li0.05Ni0.4Co0.3Mn0.25)O2 Cathode Material Prepared by Sol-Gel Method

Structural, Morphological and Impedance Spectroscopic Analyses of Nano Li(Li_0.05Ni_0.4Co_0.3Mn_0.25)O₂Cathode Material Prepared by Sol-Gel Method

Centre for Scientific and Applied Research, PSN College of Engineering and Technology, Tirunelveli-627 152, Tamil Nadu, India.

DST-INSPIRE Faculty, Department of Metallurgical Engineering and Materials Science,Indian Institute of Technology, Mumbai-400076,Tamil Nadu, India.

IER-UNAM, 62580, Temixco, Morelos, Mexico

Department of Electrical and Computer Engineering, College of Information Technology, Ajou University, Suwon 443 749, Republic of Korea.

Corresponding Author Email:

shajan89@gmail.com, sjp@ier.unam.mx

Received:

January 25, 2014

| |

Accepted:

July 14, 2014

| | Citation

415-article_text-658-1-10-20170725.pdf

OPEN ACCESS

Abstract:

In the present work, layered lithium rich Li(Li_0.05Ni_0.4Co_0.3Mn_0.25)O₂ cathode materials were synthesized and its structural and electrical studies were analyzed. Layered Li(Li_0.05Ni_0.4Co_0.3Mn_0.25)O₂cathode material was prepared by sol-gel technique using citric acid as chelating agent. The prepared sample was characterized by X-ray diffraction, SEM-EDS studies. The crystallite size of the Li(Li_0.05Ni_0.4Co_0.3Mn_0.25)O₂ cathode material was about 57 nm in which the diffusion path of lithium ion is effectively possible. The complexation behavior of prepared cathode material was analyzed by FT-IR spectroscopy. The electrical properties of the prepared Li(Li_0.05Ni_0.4Co_0.3Mn_0.25)O₂ cathode material was studied by impedance and dielectric spectral analyzes. The maximum ionic conductivity of Li(Li_0.05Ni_0.4Co_0.3Mn_0.25)O₂ was found to be in the order of 10-3.4 S/cm. The dielectric analysis of cathode material confirms the non-Debye type behavior.

Keywords:

Sol-gel synthesis, nanoparticles, lithium batteries, ionic conductivity, dielectric properties.

1. Introduction

2. Experimental Details

3. Results and Discussion

4. Conclusions

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Structural, Morphological and Impedance Spectroscopic Analyses of Nano Li(Li0.05Ni0.4Co0.3Mn0.25)O2 Cathode Material Prepared by Sol-Gel Method