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HL: Fachverband Halbleiterphysik

HL 81: Poster: Energy materials incl. photovoltaics

HL 81.3: Poster

Mittwoch, 2. April 2014, 17:00–20:00, P1

Hierarchical NiMoO4@MnO2 core-shell heterostructured nanowire arrays on Ni foam as high-performance supercapacitor electrodes — •Yaoguo Fang^1,2, Kin Mun Wong¹, Gerhard Wilde², and Yong Lei¹ — ¹Ilmenau University of Technology, Institute of Physics & IMN MacroNano (ZIK) Prof. Schmidt-Str. 26, 98693 Ilmenau (Germany) — ²Institute of Materials Physics and Center for Nanotechnology, University of Muenster, Wilhelm-Klemm-Str. 10, Muenster 48149, Germany

Supercapacitors, also known as electrochemical capacitors, have been considered as one of the most promising energy storage devices because of their many advantages, including high power density, faster charge and discharge processes, living cycle lifetime, compared the conventional capacitors. Recently, research has been particularly focused on MnMoO4, and NiMoO4 because of their superior electrochemical properties, abundant resources and environmental friendliness. In this work, we design and fabricate novel hierarchical NiMoO4@MnO2 core-shell heterostructured nanowire arrays on the nickel foam, which were used as the working electrodes to fabricate high performance supercapacitors. The NiMoO4 nanowires are "core" and ultrathin MnO2 film are "shell" structures. This structure shows attractive electrochemical behavior as electrode materials for supercapacitors. The findings exhibit the importance and great potential of metal molybdate based binary oxides in the development of high performance energy storage systems.