Open AccessThe facile one-step hydrothermal method to prepare MnO2nanoparticles: Structural and electrochemical properties
Author(s) -
K Tangphanit,
N Boonraksa,
Santi Maensiri,
Ekaphan Swatsitang,
Kwanruthai Wongsaprom
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2145/1/012034
Subject(s) - orthorhombic crystal system , materials science , nanoparticle , hydrothermal circulation , electrochemistry , current density , chemical engineering , specific surface area , adsorption , nanotechnology , crystal structure , crystallography , chemistry , electrode , catalysis , physics , quantum mechanics , engineering , biochemistry
MnO 2 nanoparticles were successfully prepared via one-step hydrothermal method. The surface are properties of the MnO 2 nanoparticles were determined by BET nitrogen adsorption-desorption measurement. The XRD analyses confirm the pure phase of γ-MnO 2 and α-MnO 2 , having orthorhombic crystal structure (JCPDS file no.14-0644 and 44-0141). FE-SEM analysis reveals the combination of massively small spherical particles with average particle size 54.8 nm. The electrochemical results revealed that the MnO 2 nanoparticles delivered the specific capacitance of 200.83 F/g at a current density of 1A/g. The cycle stability was usability 30% after 500 cycles at a current density of 5 A/g. The MnO 2 nanoparticles reveal a energy density of 3.62 Wh/kg under a power density of 43.11 W/kg.