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New Applications of Electrochemically Produced Porous Semiconductors and Nanowire Arrays

Malte Leisner*, Ala Cojocaru, Emmanuel Ossei-Wusu, Jürgen Carstensen and Helmut Föll

Author Affiliations

Institute for Materials Science, Christian-Albrechts-University of Kiel, Kaiserstrasse 2, 24143, Kiel, Germany

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Nanoscale Research Letters 2010, 5:1502-1506  doi:10.1007/s11671-010-9669-z

Published: 15 June 2010


The growing demand for electro mobility together with advancing concepts for renewable energy as primary power sources requires sophisticated methods of energy storage. In this work, we present a Li ion battery based on Si nanowires, which can be produced reliable and cheaply and which shows superior properties, such as a largely increased capacity and cycle stability. Sophisticated methods based on electrochemical pore etching allow to produce optimized regular arrays of nanowires, which can be stabilized by intrinsic cross-links, which serve to avoid unwanted stiction effects and allow easy processing.

Li ion batteries; Porous Si; Nanowires