Pacific Rim Symposium on Surfaces, Coatings and Interfaces (PacSurf 2014)
    Energy Harvesting & Storage Tuesday Sessions
       Session EH-TuP

Paper EH-TuP9
Supercapacitive Properties of 2D-arrayed Inverse-Opal Nanostructure of Manganese Oxide

Tuesday, December 9, 2014, 4:00 pm, Room Mauka

Session: Energy Harvesting & Storage Poster Session
Presenter: Ilhwan Ryu, Kookmin University, Republic of Korea
Authors: I. Ryu, Kookmin University, Republic of Korea
D. Park, Kookmin University, Republic of Korea
G. Kim, Kookmin University, Republic of Korea
S. Yim, Kookmin University, Republic of Korea
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Supercapacitor has attracted growing attention as an important energy conversion and storage device which basically consists of current collector, electrolyte and active materials. Manganese oxide (MnO2) is one of the most promising active materials due to its environmentally friendly characteristic and low price. Fabrication of nanostructured active materials has also been widely studied since it can provide large surface area and short diffusion path for ions and electrons, and hence improve the capacitive properties of the supercapacitors. In this work, we fabricated well-ordered MnO2 inverse-opal nanostructures using two-dimensionally arrayed polystyrene nanospheres. We also investigated their optical, morphological and electrochemical properties, and compared them with the properties of the device based on the planar MnO2 films.