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|Title:||High-quality metal oxide core/shell nanowire arrays on conductive substrates for electrochemical energy storage||Authors:||Xia, Xinhui
Fan, Hong Jin
|Issue Date:||2012||Source:||Xia, X., Tu, J., Zhang, Y., Wang, X., Gu, C., Zhao, X.-b., et al. (2012). High-Quality Metal Oxide Core/Shell Nanowire Arrays on Conductive Substrates for Electrochemical Energy Storage. ACS Nano, 6(6), 5531-5538.||Series/Report no.:||ACS nano||Abstract:||The high performance of a pseudocapacitor electrode relies largely on a scrupulous design of nanoarchitectures and smart hybridization of bespoke active materials. We present a powerful two-step solution-based method for the fabrication of transition metal oxide core/shell nanostructure arrays on various conductive substrates. Demonstrated examples include Co3O4 or ZnO nanowire core and NiO nanoflake shells with a hierarchical and porous morphology. The “oriented attachment” and “self-assembly” crystal growth mechanisms are proposed to explain the formation of the NiO nanoflake shell. Supercapacitor electrodes based on the Co3O4/NiO nanowire arrays on 3D macroporous nickel foam are thoroughly characterized. The electrodes exhibit a high specific capacitance of 853 F/g at 2 A/g after 6000 cycles and an excellent cycling stability, owing to the unique porous core/shell nanowire array architecture, and a rational combination of two electrochemically active materials. Our growth approach offers a new technique for the design and synthesis of transition metal oxide or hydroxide hierarchical nanoarrays that are promising for electrochemical energy storage, catalysis, and gas sensing applications.||URI:||https://hdl.handle.net/10356/96509
|ISSN:||1936-0851||DOI:||10.1021/nn301454q||Rights:||© 2012 American Chemical Society.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||SPMS Journal Articles|
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