DataVXAdvanced MaterialsPaper
journal article·2020-07

Conversion of Intercalated MoO3 to Multi‐Heteroatoms‐Doped MoS2 with High Hydrogen Evolution Activity

Weiwei Yang, Shuqing Zhang, Qian Chen, Chao Zhang, Yi Wei, Huaning Jiang, Yunxiang Lin, Mengting Zhao, Qianqian He, Xingguo Wang, Yi Du, Li Song, Shubin Yang, Anmin Nie, Xiaolong Zou, Yongji Gong

Advanced Materials· Volume 32· Issue 30
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Source abstract

Abstract

Abstract Lack of effective strategies to regulate the internal activity of MoS2 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‐MoS2, which includes intercalation of the layered MoO3 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 MoS2 without forming clusters, phase separation, and an edge enrichment. It is demonstrated that the doping of adjacent cobalt and palladium monomers on MoS2 greatly enhances the HER catalytic activity. The overpotential at 10 mA cm−2 and Tafel slope of Co and Pd co‐doped MoS2 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.
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Research context

Catalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · MXene and MAX Phase Materials · Catalysis and Hydrodesulfurization Studies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Materials Science and Engineering Beihang University Beijing 100191 China

Shenzhen Geim Graphene Center and Low‐Dimensional Materials and Devices Laboratory Tsinghua‐Berkeley Shenzhen Institute Tsinghua University Shenzhen 518055 China

State Key Laboratory of Organic–Inorganic Composites Beijing Key Laboratory of Electro‐chemical Process and Technology for Materials Beijing University of Chemical Technology Beijing 100029 China

National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230029 China

School of Physics and BUAA‐UOW Joint Research Centre Beihang University Beijing 100191 China

Institute for Superconducting and Electronic Materials Australian Institute for Innovative Materials University of Wollongong Wollongong 2500 Australia

Center for High Pressure Science State Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao 066004 China

Funding

National Natural Science Foundation of China · Key Technologies Research and Development Program · Economy, Trade and Information Commission of Shenzhen Municipality · China Postdoctoral Science Foundation

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