Volume 57, Issue 1
Communication

Three‐Dimensional Graphene Networks with Abundant Sharp Edge Sites for Efficient Electrocatalytic Hydrogen Evolution

Huaping Wang

Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 P.R. China

University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

These authors contributed equally to this work.

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Dr. Xu‐Bing Li

Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

These authors contributed equally to this work.

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Dr. Lei Gao

State Key Laboratory of Tribology, Tsinghua University, Beijing, 100084 P. R. China

Corrosion and Protection Center, Key Laboratory for Environmental Fracture (MOE), University of Science and Technology Beijing, Beijing, 100083 P. R. China

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Hao‐Lin Wu

Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

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Jie Yang

Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 P.R. China

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Le Cai

Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 P.R. China

University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

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Prof. Dr. Tian‐Bao Ma

Corresponding Author

E-mail address: mtb@mail.tsinghua.edu.cn

State Key Laboratory of Tribology, Tsinghua University, Beijing, 100084 P. R. China

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Prof. Dr. Chen‐Ho Tung

Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

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Prof. Dr. Li‐Zhu Wu

Corresponding Author

E-mail address: lzwu@mail.ipc.ac.cn

Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

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Prof. Dr. Gui Yu

Corresponding Author

E-mail address: yugui@iccas.ac.cn

Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 P.R. China

University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

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First published: 11 November 2017
Citations: 46

Abstract

To achieve sustainable production of hydrogen (H2) through water splitting, establishing efficient and earth‐abundant electrocatalysts is of great necessity. Morphology engineering of graphene is now shown to modulate the electronic structure of carbon skeleton and in turn endow it with excellent ability of proton reduction. Three‐dimensional (3D) graphene networks with a high density of sharp edge sites are synthesized. Electrocatalytic measurements indicate that the obtained 3D graphene networks can electrocatalyze H2 evolution with an extremely low onset potential of about 18 mV in 0.5 m H2SO4 solution, together with good stability. A combination of control experiments and density functional theory (DFT) investigations indicates that the exceptional H2 evolution performance is attributed to the abundant sharp edge sites of the advanced frameworks, which are responsible for promoting the adsorption and reduction of protons.

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