25-27 November 2015
National Centre for Synchrotron Science
Australia/Melbourne timezone

Analysis of manganese dioxide electrochemical capacitors using synchrotron methods: in-situ analysis of electrodeposition.

27 Nov 2015, 13:30
National Centre for Synchrotron Science

National Centre for Synchrotron Science

Australian Synchrotron 800 Blackburn Road Clayton VIC 3168
Board: EM-02
Poster Energy Materials Poster Session 2


Mr Andrew Gibson (University of Newcastle)


Manganese oxides (MnO2, MnOOH) are promising materials for electrochemical capacitors due to their low cost and toxicity, coupled with their attractive energy storage properties, and are hence well represented in the literature [1]. Thin films of MnO2 prepared by electrodeposition are capable of achieving high values for gravimetric specific capacitance (>2000 F/g) [2]. Material activity, as well as material morphology play an important role in determining the capacitive behaviour of a material [3]. Thus, it is important to understand the role the electrodeposition solution has on the resultant structure and morphology of the deposited manganese oxides. In this poster, the in-situ application of three different synchrotron techniques to the electrodeposition of manganese oxides will be discussed. The beamlines utilised for the experiments described in this poster are powder diffraction, small angle x-ray scattering and x-ray absorption spectroscopy. In all cases, the electrodeposited manganese oxides have been prepared from a solution containing between 0.001 - 0.1 M MnSO4 and 0.01 – 1 M H2SO4. 1. Wei, W., et al., Manganese oxide-based materials as electrochemical supercapacitor electrodes. Chemical Society Reviews, 2011(40): p. 1697 - 1721. 2. Andrew Cross, A.M., Ariana Cormie, Tony Hollenkamp, Scott Donne, Enhanced Manganese Dioxide Supercapacitor Electrodes Produced by Electrodeposition. Journal of Power Sources, 2011. 196: p. 7847 - 7853. 3. Conway, B.E., Electrochemical Supercapacitors: Scientific Fundamentals and Technological Applications. 1999, New York: Springer.
Keywords manganese dioxide, electrochemical capacitors, energy materials, electrodeposition

Primary author

Mr Andrew Gibson (University of Newcastle)


Ms Madeleine Dupont (University of Newcastle) Prof. Scott Donne (University of Newcastle) Mr Wesley Dose (University of Newcastle)

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