Coral-shaped MoS2 decorated with graphene quantum dots performing as a highly active electrocatalyst for hydrogen evolution reaction

Bangjun Guo, Ke Yu, Honglin Li, Ruijuan Qi, Yuanyuan Zhang, Haili Song, Zheng Tang, Ziqiang Zhu, Mingwei Chen

    研究成果: Article査読

    58 被引用数 (Scopus)

    抄録

    We report a new CVD method to prepare coral-shaped monolayer MoS2 with a large amount of exposed edge sites for catalyzing hydrogen evolution reaction. The electrocatalytic activities of the coral-shaped MoS2 can be further enhanced by electronic band engineering via decorated with graphene quantum dot (GQD) decoration. Generally, GQDs improve the electrical conductivity of the MoS2 electrocatalyst. First-principles calculations suggest that the coral MoS2@GQD is a zero-gap material. The high electric conductivity and pronounced catalytically active sites give the hybrid catalyst outstanding electrocatalytic performance with a small onset overpotential of 95 mV and a low Tafel slope of 40 mV/dec as well as excellent long-term electrocatalytic stability. The present work provides a potential way to design two-dimensional hydrogen evolution reaction (HER) electrocatalysts through controlling the shape and modulating the electric conductivity.

    本文言語English
    ページ(範囲)3653-3660
    ページ数8
    ジャーナルACS Applied Materials and Interfaces
    9
    4
    DOI
    出版ステータスPublished - 2017 2 1

    ASJC Scopus subject areas

    • 材料科学(全般)

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