Nanoporous Graphene with Single-Atom Nickel Dopants: An Efficient and Stable Catalyst for Electrochemical Hydrogen Production

H. J. Qiu, Yoshikazu Ito, Weitao Cong, Yongwen Tan, Pan Liu, Akihiko Hirata, Takeshi Fujita, Zheng Tang, Mingwei Chen

研究成果: Article

211 引用 (Scopus)

抄録

Single-atom nickel dopants anchored to three-dimensional nanoporous graphene can be used as catalysts of the hydrogen evolution reaction (HER) in acidic solutions. In contrast to conventional nickel-based catalysts and graphene, this material shows superior HER catalysis with a low overpotential of approximately 50 mV and a Tafel slope of 45 mV dec-1 in 0.5 M H2SO4 solution, together with excellent cycling stability. Experimental and theoretical investigations suggest that the unusual catalytic performance of this catalyst is due to sp-d orbital charge transfer between the Ni dopants and the surrounding carbon atoms. The resultant local structure with empty C-Ni hybrid orbitals is catalytically active and electrochemically stable.

元の言語English
ページ(範囲)14031-14035
ページ数5
ジャーナルAngewandte Chemie - International Edition
54
発行部数47
DOI
出版物ステータスPublished - 2015 11 16
外部発表Yes

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Hydrogen production
Nickel
Graphene
Doping (additives)
Atoms
Catalysts
Hydrogen
Catalysis
Charge transfer
Carbon

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

これを引用

Nanoporous Graphene with Single-Atom Nickel Dopants : An Efficient and Stable Catalyst for Electrochemical Hydrogen Production. / Qiu, H. J.; Ito, Yoshikazu; Cong, Weitao; Tan, Yongwen; Liu, Pan; Hirata, Akihiko; Fujita, Takeshi; Tang, Zheng; Chen, Mingwei.

:: Angewandte Chemie - International Edition, 巻 54, 番号 47, 16.11.2015, p. 14031-14035.

研究成果: Article

Qiu, H. J. ; Ito, Yoshikazu ; Cong, Weitao ; Tan, Yongwen ; Liu, Pan ; Hirata, Akihiko ; Fujita, Takeshi ; Tang, Zheng ; Chen, Mingwei. / Nanoporous Graphene with Single-Atom Nickel Dopants : An Efficient and Stable Catalyst for Electrochemical Hydrogen Production. :: Angewandte Chemie - International Edition. 2015 ; 巻 54, 番号 47. pp. 14031-14035.
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AU - Liu, Pan

AU - Hirata, Akihiko

AU - Fujita, Takeshi

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AB - Single-atom nickel dopants anchored to three-dimensional nanoporous graphene can be used as catalysts of the hydrogen evolution reaction (HER) in acidic solutions. In contrast to conventional nickel-based catalysts and graphene, this material shows superior HER catalysis with a low overpotential of approximately 50 mV and a Tafel slope of 45 mV dec-1 in 0.5 M H2SO4 solution, together with excellent cycling stability. Experimental and theoretical investigations suggest that the unusual catalytic performance of this catalyst is due to sp-d orbital charge transfer between the Ni dopants and the surrounding carbon atoms. The resultant local structure with empty C-Ni hybrid orbitals is catalytically active and electrochemically stable.

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