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    Ultra-thin solution-based coating of molybdenum oxide on multiwall carbon nanotubes for high-performance supercapacitor electrodes

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    Type
    Article
    Authors
    Shakir, Imran
    Nadeem, Muhammad Tahir
    Shahid, Muhammad
    Kang, Dae Joon
    KAUST Department
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2014-02
    Permanent link to this record
    http://hdl.handle.net/10754/563371
    
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    Abstract
    Uniform and conformal coating of ultrathin molybdenum oxide (MoO 3) thin film onto conducting MWCNTs was successfully synthesized through a facile, nontoxic and generally applicable precipitation method, followed by a simple heat treatment. The ultrathin MoO3 coating enables a fast and reversible redox reaction which improves the specific capacitance by utilizing the maximum number of active sites for the redox reaction, while the high porosity of the MWCNTs facilitates ion migration in the electrolyte and shorten the ion diffusion path. The ultrathin MoO3 coated MWCNTs electrodes show a very high specific capacitance of 1145 Fg -1 in 2 M Na2SO4 aqueous solution when 5 nm thick MoO3 was considered alone despite the low weight percentage of the MoO3 (16wt%). Furthermore, the ultrathin MoO3 coated MWCNTs supercapacitor electrodes exhibited excellent cycling performance of > 97% capacitance retention over 1000 cycles. © 2013 Elsevier Ltd.
    Citation
    Shakir, I., Nadeem, M., Shahid, M., & Kang, D. J. (2014). Ultra-thin Solution-based coating of Molybdenum Oxide on Multiwall Carbon Nanotubes for High-performance Supercapacitor Electrodes. Electrochimica Acta, 118, 138–142. doi:10.1016/j.electacta.2013.11.135
    Sponsors
    This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2009-0094023). IS would like to extend his sincere appreciation to the Deanship of Scientific Research at King Saud University for the funding through Research Group Project no. RGP-VPP-312.
    Publisher
    Elsevier BV
    Journal
    Electrochimica Acta
    DOI
    10.1016/j.electacta.2013.11.135
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.electacta.2013.11.135
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program

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