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

Hui Li; Yongwen Tan; Pan Liu; Chenguang Guo; Min Luo; Jiuhui Han; Tianquan Lin; Fuqiang Huang; Mingwei Chen

doi:10.1002/adma.201602502

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

Adv Mater. 2016 Oct;28(40):8945-8949. doi: 10.1002/adma.201602502. Epub 2016 Aug 25.

Authors

Hui Li¹, Yongwen Tan^{1

2}, Pan Liu^{1

2}, Chenguang Guo³, Min Luo², Jiuhui Han², Tianquan Lin³, Fuqiang Huang³, Mingwei Chen^{4

5

6}

Affiliations

¹ State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China.
² WPI Advanced Institute for Materials Research, Tohoku University, Sendai, 980-8577, Japan.
³ State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China.
⁴ State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China. mwchen@wpi-aimr.tohoku.ac.jp.
⁵ WPI Advanced Institute for Materials Research, Tohoku University, Sendai, 980-8577, Japan. mwchen@wpi-aimr.tohoku.ac.jp.
⁶ Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, 21214, USA. mwchen@wpi-aimr.tohoku.ac.jp.

PMID: 27561130
DOI: 10.1002/adma.201602502

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 .

Keywords: 2D crystals; TaS2 nanosheets; hydrogen evolution reactions; porous materials; transition metal dichalcogenides.