Synthesis and Electrochemical Properties of LaMnO3 Perovskite Nanoparticles

B. K. Ostafiychuk; H. M. Kolkovska; I. P. Yaremiy; B. I. Rachiy; P. I. Kolkovskyi; N. Ya. Ivanichok; S. I. Yaremiy

doi:10.15330/pcss.21.2.219-226

Authors

B. K. Ostafiychuk Vasyl Stefanyk Precarpathian National University
H. M. Kolkovska Vasyl Stefanyk Precarpathian National University
I. P. Yaremiy Vasyl Stefanyk Precarpathian National University
B. I. Rachiy Vasyl Stefanyk Precarpathian National University
P. I. Kolkovskyi Vasyl Stefanyk Precarpathian National University
N. Ya. Ivanichok Vasyl Stefanyk Precarpathian National University
S. I. Yaremiy Ivano-Frankivsk National Medical University

DOI:

https://doi.org/10.15330/pcss.21.2.219-226

Keywords:

sol-gel process, perovskite structure, KOH electrolyte, specific capacity

Abstract

In this work, the perovskite LaMnO₃ material has been prepared based on the sol-gel process of synthesis with the participation of combustion. According to the X-ray phase analysis, it was determined that the obtained material consists of LaMnO₃one phase (space group Pm-3m). Nevertheless, it has been determined that the average size of the coherent scattering region of the obtained material is about 24 nm. Moreover, the average particle size is 40-60 nm in case the approximation that the particles are spherical shape. Thus, it has been determined that the specific surface area of the material is 42.1 m²/g. The electrochemical investigations have been performed using nanosized LaMnO₃ powder as a cathode material for electrochemical capacitors. The LaMnO₃ material under research showed a specific capacity of 40 F/g at a discharge of up to 1V.

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