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Conversion of Intercalated MoO 3 to Multi‐Heteroatoms‐Doped MoS 2 with High Hydrogen Evolution Activity
Author(s) -
Yang Weiwei,
Zhang Shuqing,
Chen Qian,
Zhang Chao,
Wei Yi,
Jiang Huaning,
Lin Yunxiang,
Zhao Mengting,
He Qianqian,
Wang Xingguo,
Du Yi,
Song Li,
Yang Shubin,
Nie Anmin,
Zou Xiaolong,
Gong Yongji
Publication year - 2020
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.202001167
Subject(s) - heteroatom , overpotential , materials science , tafel equation , intercalation (chemistry) , doping , catalysis , cobalt , transition metal , graphene , van der waals force , metal , palladium , hydrogen , inorganic chemistry , chemical engineering , nanotechnology , chemistry , electrode , molecule , organic chemistry , optoelectronics , electrochemistry , metallurgy , ring (chemistry) , engineering
Lack of effective strategies to regulate the internal activity of MoS 2 limits its practical application for hydrogen evolution reactions (HERs). Doping of heteroatoms without forming aggregation or an edge enrichment is still challenging, and its effect on the HER needs to be further explored. Herein, a two‐step method is developed to obtain multi‐metal‐doped H‐MoS 2 , which includes intercalation of the layered MoO 3 precursor with a following sulfurization. Benefiting from the capability of the intercalation method to uniformly and simultaneously introduce different elements into the van der Waals gap, this method is universal to obtain multi‐heteroatoms co‐doped MoS 2 without forming clusters, phase separation, and an edge enrichment. It is demonstrated that the doping of adjacent cobalt and palladium monomers on MoS 2 greatly enhances the HER catalytic activity. The overpotential at 10 mA cm −2 and Tafel slope of Co and Pd co‐doped MoS 2 is found to be 49.3 mV and 43.2 mV dec −1 , respectively, representing a superior acidic HER catalytic activity. This intercalation‐assisted method also provides a new and general strategy to synthesize uniformly doped transition metal dichalcogenides for various applications.