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Journal of Materials Science
Erschienen in: Journal of Materials Science 18/2015

01.09.2015 | Original Paper

Facile synthesis of MnCO3 nanoparticles by supercritical CO2 and their conversion to manganese oxide for supercapacitor electrode materials

verfasst von: Sang Ha Lee, Youngtak Kwon, Sengyoen Park, Misuk Cho, Youngkwan Lee

Erschienen in: Journal of Materials Science | Ausgabe 18/2015

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Abstract

Spherical manganese carbonate (MnCO3) nanoparticles were prepared from manganese acetate by means of supercritical carbon dioxide (scCO2). The variation of morphology according to temperature, pressure, and solvent composition was studied. Quite uniformly sized MnCO3 nanoparticles were effectively produced in a short period of time with the aid of supercritical fluid. Furthermore, porous manganese oxide (MnOx) nanoparticles with high surface area were obtained via calcination process of MnCO3 nanoparticles, and its performance as a supercapacitor was investigated. The porous manganese oxide nanoparticles showed a high specific capacitance of 322 Fg−1 at 1 Ag−1 with excellent rate capability and cyclic stability. This study provides a new approach for the facile and eco-friendly fabrication of MnCO3 nanoparticles using scCO2 and their conversion to porous MnOx for supercapacitor application.
Vorheriger Artikel A simple way to synthesize anatase with high thermal stability
Nächster Artikel Highly enhanced selectivity for the separation of rhenium and molybdenum using amino-functionalized magnetic Cu-ferrites

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Metadaten
Titel
Facile synthesis of MnCO3 nanoparticles by supercritical CO2 and their conversion to manganese oxide for supercapacitor electrode materials
verfasst von
Sang Ha Lee
Youngtak Kwon
Sengyoen Park
Misuk Cho
Youngkwan Lee
Publikationsdatum
01.09.2015
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 18/2015
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-015-9133-7

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