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Vertical 1T‐TaS 2 Synthesis on Nanoporous Gold for High‐Performance Electrocatalytic Applications
Author(s) -
Huan Yahuan,
Shi Jianping,
Zou Xiaolong,
Gong Yue,
Zhang Zhepeng,
Li Minghua,
Zhao Liyun,
Xu Runzhang,
Jiang Shaolong,
Zhou Xiebo,
Hong Min,
Xie Chunyu,
Li He,
Lang Xingyou,
Zhang Qing,
Gu Lin,
Yan Xiaoqin,
Zhang Yanfeng
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201705916
Subject(s) - materials science , tafel equation , nanoporous , nanotechnology , substrate (aquarium) , current density , metal , phase (matter) , chemical vapor deposition , catalysis , chemical engineering , electrochemistry , electrode , chemistry , organic chemistry , oceanography , physics , quantum mechanics , geology , engineering , metallurgy
2D metallic TaS 2 is acting as an ideal platform for exploring fundamental physical issues (superconductivity, charge‐density wave, etc.) and for engineering novel applications in energy‐related fields. The batch synthesis of high‐quality TaS 2 nanosheets with a specific phase is crucial for such issues. Herein, the successful synthesis of novel vertically oriented 1T‐TaS 2 nanosheets on nanoporous gold substrates is reported, via a facile chemical vapor deposition route. By virtue of the abundant edge sites and excellent electrical transport property, such vertical 1T‐TaS 2 is employed as high‐efficiency electrocatalysts in the hydrogen evolution reaction, featured with rather low Tafel slopes ≈67–82 mV dec −1 and an ultrahigh exchange current density ≈67.61 µA cm −2 . The influence of phase states of 1T‐ and 2H‐TaS 2 on the catalytic activity is also discussed with the combination of density functional theory calculations. This work hereby provides fundamental insights into the controllable syntheses and electrocatalytic applications of vertical 1T‐TaS 2 nanosheets achieved through the substrate engineering.