A Rapid Synthesis of Mesoporous Mn2O3 Nanoparticles for Supercapacitor Applications

Mn2O3 nanomaterials have been recently composing a variety of electrochemical systems like fuel cells, supercapacitors, etc., due to their high specific capacitance, low cost, abundance and environmentally benign nature. In this work, mesoporous Mn2O3 nanoparticles (NPs) were synthesized by manganes...

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Veröffentlicht in:Coatings (Basel) 2019-10, Vol.9 (10), p.631
Hauptverfasser: Son, You-Hyun, Bui, Phuong T. M., Lee, Ha-Ryeon, Akhtar, Mohammad Shaheer, Shah, Deb Kumar, Yang, O-Bong
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container_end_page
container_issue 10
container_start_page 631
container_title Coatings (Basel)
container_volume 9
creator Son, You-Hyun
Bui, Phuong T. M.
Lee, Ha-Ryeon
Akhtar, Mohammad Shaheer
Shah, Deb Kumar
Yang, O-Bong
description Mn2O3 nanomaterials have been recently composing a variety of electrochemical systems like fuel cells, supercapacitors, etc., due to their high specific capacitance, low cost, abundance and environmentally benign nature. In this work, mesoporous Mn2O3 nanoparticles (NPs) were synthesized by manganese acetate, citric acid and sodium hydroxide through a hydrothermal process at 150 °C for 3 h. The synthesized mesoporous Mn2O3 NPs were thoroughly characterized in terms of their morphology, surfaces, as well as their crystalline, electrochemical and electrochemical properties. For supercapacitor applications, the synthesized mesoporous Mn2O3 NP-based electrode accomplished an excellent specific capacitance (Csp) of 460 F·g−1 at 10 mV·s−1 with a good electrocatalytic activity by observing good electrochemical properties in a 6 M KOH electrolyte. The excellent Csp might be explained by the improvement of the surface area, porous surface and uniformity, which might favor the generation of large active sites and a fast ionic transport over the good electrocatalytic surface of the Mn2O3 electrode. The fabricated supercapacitors exhibited a good cycling stability after 5000 cycles by maintaining ~83% of Csp.
doi_str_mv 10.3390/coatings9100631
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subjects Batteries
Capacitance
Citric acid
Electrochemical analysis
Electrodes
Electrolytes
Electrolytic cells
Fuel cells
Manganese oxides
Metal oxides
Morphology
Nanomaterials
Nanoparticles
Sodium hydroxide
Spectrum analysis
Supercapacitors
Synthesis
Transmission electron microscopy
title A Rapid Synthesis of Mesoporous Mn2O3 Nanoparticles for Supercapacitor Applications
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