Please use this identifier to cite or link to this item:
Title: MnCO3: A novel electrode material for supercapacitors
Authors: Devaraj, S.
Liu, H.Y.
Balaya, P. 
Issue Date: 28-Mar-2014
Citation: Devaraj, S., Liu, H.Y., Balaya, P. (2014-03-28). MnCO3: A novel electrode material for supercapacitors. Journal of Materials Chemistry A 2 (12) : 4276-4281. ScholarBank@NUS Repository.
Abstract: In this manuscript, MnCO3 is introduced as a novel electrode material for supercapacitors. MnCO3 was synthesized by a hydrothermal method using KMnO4 and commercial sugar as precursors. The synthesized product was characterized by powder X-ray diffraction, SEM, TEM and Raman spectroscopic studies. Rietveld refinement of powder X-ray diffraction confirmed the formation of a pure phase of MnCO3. Microscopic studies revealed particles of different shapes with sizes varying from 0.1 to 0.3 μm. Elemental mapping demonstrated a uniform distribution of manganese, carbon, and oxygen and there are no other impurity elements observed. The capacitive storage performance of MnCO3 was evaluated in three different electrolytes, namely, 0.1 M Na2SO4, 0.1 M Mg(ClO4)2 and 6 M KOH by cyclic voltammetry and galvanostatic charge-discharge cycling. A high specific capacitance of 216 F g-1 was obtained at a high loading level of 1.5 mg cm-2 for submicron sized particles of MnCO3 in a 0.1 M Mg(ClO 4)2 electrolyte. Good reversibility, high coulombic efficiency, respectable rate performance and long cycle-life are also reported for MnCO3. This study opens up ample avenues to explore a new class of carbonate based materials for supercapacitor applications. © 2014 The Royal Society of Chemistry.
Source Title: Journal of Materials Chemistry A
ISSN: 20507488
DOI: 10.1039/c3ta14174h
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Mar 18, 2019


checked on Mar 18, 2019

Page view(s)

checked on Mar 23, 2019

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.