Physical and Electrochemical Characterization of Nsutite
- 1 Department of Physics & Engineering Physics, Central Connecticut State University, New Britain, CT, USA
- 2 Dynetics, 1002 Explorer Blvd, Huntsville, AL, USA
- 3 Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, PA, USA
- 4 Department of Physics & Engineering Physics, Central Connecticut State University, New Britain, CT, USA
- 5 Department of Physics & Engineering Physics, Central Connecticut State University, New Britain, CT, USA
Abstract
Manganese oxides are of interest as, among a number of other applications, supercapacitor materials for energy storage systems. Nsutite, a naturally occurring Manganese Oxide was studied as a possible high-volume source of materials for supercapacitor applications. X-ray diffraction and thermal analysis (DSC/TGA) measurements were carried out to characterize its physical properties, and Cyclic Voltametry and galvanostatic charge-discharge measurements were carried out to obtain its electrochemical properties. The XRD and thermal results support transitions of nsutite, upon heating which were attributed to conversion to MnO 2 , and to Mn 2 O 3 and eventually to Mn 3 O 4 . The electrochemical results of the as mined material show supercapacitance behaviour, suggesting that nsutite, with some heat processing, is to be a promising high-volume source of manganese oxides for supercapacitor applications.
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