Open AccessSynthesis and electrochemical properties of LaMnO3 orthosized nanomaterial for supercapacitor applications
Author(s) -
B. K. Ostafiychuk,
H. M. Kolkovska,
I. P. Yaremiy,
B.І. Rachiy,
P. I. Kolkovskyi,
N.Ya. Ivanichok,
S. I. Yaremiy
Publication year - 2020
Publication title -
physics and chemistry of solid state
Language(s) - English
Resource type - Journals
eISSN - 2309-8589
pISSN - 1729-4428
DOI - 10.15330/pcss.21.2.219-226
Subject(s) - materials science , electrochemistry , nanomaterials , particle size , specific surface area , supercapacitor , perovskite (structure) , chemical engineering , cathode , phase (matter) , particle (ecology) , sol gel , microstructure , analytical chemistry (journal) , nanotechnology , composite material , electrode , chemistry , organic chemistry , oceanography , geology , engineering , catalysis
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 LaMnO3 one 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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