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Showing 1–3 of 3 results
Advanced filters: Author: Hyo-Jun Ahn Clear advanced filters

  • The physical properties of gel materials makes them attractive options in various applications, but supramolecular gels typically lack mechanical strength. Here, the authors present a calix[4]arene-based supramoleculer gel tuned to possess high tensile strength.

    • Ji Ha Lee
    • Jaehyeon Park
    • Jong Hwa Jung
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-9

  • β-MnO2 nanorods with exposed tunnel structures have been successfully synthesized by a hydrothermal method. The as-prepared β-MnO2 nanorods have exposed {111} crystal planes with a high density of (1 × 1) tunnels, leading to facile Na-ion insertion and extraction. When applied as cathode materials in Na-ion batteries, the β-MnO2 nanorods exhibited a superior electrochemical performance with a high initial Na-ion storage capacity of 350 mAh g−1.β-MnO2 nanorods also demonstrated an excellent high rate capability and a good cyclability.

    • Dawei Su
    • Hyo-Jun Ahn
    • Guoxiu Wang
    ResearchOpen Access
    NPG Asia Materials
    Volume: 5, P: e70

  • We report the synthesis of ruthenium nanocrystal-decorated vertically aligned graphene nanosheets grown on nickel foam. As an effective binder-free cathode for Li-O2 batteries, it can significantly reduce the charge overpotential via their effects on the oxygen evolution reaction and achieve high specific capacity, leading to an enhanced electrochemical performance.

    • Dawei Su
    • Dong Han Seo
    • Guoxiu Wang
    ResearchOpen Access
    NPG Asia Materials
    Volume: 8, P: e286