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  Carbon-Tailored Semimetal MoP as an Efficient Hydrogen Evolution Electrocatalyst in Both Alkaline and Acid Media

Li, G., Sun, Y., Rao, J., Wu, J., Kumar, A., Xu, Q. N., et al. (2018). Carbon-Tailored Semimetal MoP as an Efficient Hydrogen Evolution Electrocatalyst in Both Alkaline and Acid Media. Advanced Energy Materials, 8(24): 1801258, pp. 1-7. doi:10.1002/aenm.201801258.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-11D0-F Version Permalink: http://hdl.handle.net/21.11116/0000-0002-11D5-A
Genre: Journal Article

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 Creators:
Li, Guowei1, Author              
Sun, Yan1, Author              
Rao, Jiancun2, Author
Wu, Jiquan2, Author
Kumar, Anil2, Author
Xu, Qiu Nan1, Author              
Fu, Chenguang1, Author              
Liu, Enke1, Author              
Blake, Graeme R.2, Author
Werner, Peter2, Author
Shao, Baiqi2, Author
Liu, Kai2, Author
Parkin, Stuart2, Author
Liu, Xianjie2, Author
Fahlman, Mats2, Author
Liou, Sz-Chian2, Author
Auffermann, Gudrun3, Author              
Zhang, Jian2, Author
Felser, Claudia4, Author              
Feng, Xinliang2, Author
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2External Organizations, ou_persistent22              
3Gudrun Auffermann, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863432              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: The electrolysis processes such as hydrogen evolution reaction (HER) require high efficient catalysts with robust surface stability. A high conductivity is also necessary to speed up the charge transport between the catalyst and the electrolyte. Recently, the observation of exceedingly high conductivity in the topological semimetal MoP, has provided a model catalyst to investigate the correlation between the electrical transport and the electrocatalytic activity for the HER. Thus, MoP is encapsulated in a Mo, P codoped carbon layer (MoP@C). This composite material exhibits outstanding HER performance, with an extremely low overpotential of 49 mV at a current density of 10 mA cm(-2) and a Tafel slope of 54 mV dec(-1) in an alkaline medium. In addition, electron transport analysis indicates that MoP exhibits high conductivity and mobility due to the existence of triple-point fermions and a complex Fermi surface. Furthermore, the presence of P-C and Mo-C bonds at the interface between the carbon layer and the MoP particles modulates the band structure of MoP@C and facilitates fast electron transfer, accumulation, and subsequent delocalization, which are in turn responsible for the excellent HER activity.

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Language(s): eng - English
 Dates: 2018-06-252018-06-25
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: 000442731100022
DOI: 10.1002/aenm.201801258
 Degree: -

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Title: Advanced Energy Materials
  Abbreviation : Adv. Energy Mater.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 8 (24) Sequence Number: 1801258 Start / End Page: 1 - 7 Identifier: Other: 1614-6832
CoNE: /journals/resource/1614-6832