Communication

Atomic‐Sized Pores Enhanced Electrocatalysis of TaS₂ Nanosheets for Hydrogen Evolution

State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200030 P. R. China

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Yongwen Tan

State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200030 P. R. China

WPI Advanced Institute for Materials Research, Tohoku University, Sendai, 980‐8577 Japan

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Pan Liu

State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200030 P. R. China

WPI Advanced Institute for Materials Research, Tohoku University, Sendai, 980‐8577 Japan

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Chenguang Guo

State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050 P. R. China

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Min Luo

WPI Advanced Institute for Materials Research, Tohoku University, Sendai, 980‐8577 Japan

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Jiuhui Han

WPI Advanced Institute for Materials Research, Tohoku University, Sendai, 980‐8577 Japan

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Tianquan Lin

State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050 P. R. China

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Fuqiang Huang

State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050 P. R. China

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Mingwei Chen

Corresponding Author

E-mail address: mwchen@wpi-aimr.tohoku.ac.jp

State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200030 P. R. China

WPI Advanced Institute for Materials Research, Tohoku University, Sendai, 980‐8577 Japan

Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, 21214 USA

E‐mail: mwchen@wpi-aimr.tohoku.ac.jp Search for more papers by this author

Hui Li

State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200030 P. R. China

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Yongwen Tan

State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200030 P. R. China

WPI Advanced Institute for Materials Research, Tohoku University, Sendai, 980‐8577 Japan

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Pan Liu

State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200030 P. R. China

WPI Advanced Institute for Materials Research, Tohoku University, Sendai, 980‐8577 Japan

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Chenguang Guo

State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050 P. R. China

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Min Luo

WPI Advanced Institute for Materials Research, Tohoku University, Sendai, 980‐8577 Japan

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Jiuhui Han

WPI Advanced Institute for Materials Research, Tohoku University, Sendai, 980‐8577 Japan

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Tianquan Lin

State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050 P. R. China

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Fuqiang Huang

State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050 P. R. China

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Mingwei Chen

Corresponding Author

E-mail address: mwchen@wpi-aimr.tohoku.ac.jp

State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200030 P. R. China

WPI Advanced Institute for Materials Research, Tohoku University, Sendai, 980‐8577 Japan

Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, 21214 USA

E‐mail: mwchen@wpi-aimr.tohoku.ac.jp Search for more papers by this author

First published: 25 August 2016

https://doi.org/10.1002/adma.201602502

Citations: 71

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Abstract

A plasma oxidation method is developed to fabricate atomic‐scale pores in the basal planes of electrochemically inert TaS₂ nanosheets to functionalize the 2D crystals with high electrocatalysis for hydrogen evolution reaction. Quantitative measurements of under‐coordinated atoms at edges of the pores by aberration‐corrected transmission electron microscopy reveal the intrinsic correlation between the defective atomic sites and electrocatalytic activities of 2D TaS₂.