- Title
- Air-stable phosphorus-doped molybdenum nitride for enhanced elctrocatalytic hydrogen evolution
- Creator
- Yan, Junqing; Kong, Lingqiao; Ji, Yujin; Li, Youyong; White, Jai; Liu, Shengzhong (Frank); Han, Xiaopeng; Lee, Shuit-Tong; Ma, Tianyi
- Relation
- Communications Chemistry Vol. 1, no. 95
- Publisher Link
- http://dx.doi.org/10.1038/s42004-018-0097-9
- Publisher
- Nature Publishing Group
- Resource Type
- journal article
- Date
- 2018
- Description
- Molybdenum-based electrocatalysts for hydrogen evolution have been investigated extensively in recent years. However, unlike other non-oxides, molybdenum nitride generally shows a weak preference for hydrogen evolution and low performance owing to surface oxidation and the strong Mo–H bond. Here, we prepare an air-stable molybdenum nitride through a multi-step solid-state reaction. We find that a uniformly dispersed mixture of the precursors is optimal for preparation of the electrocatalyst. To further enhance hydrogen evolution performance towards practical device applications, phosphorus doping is carried out, using a few layered black phosphorus source. The phosphorus-doped molybdenum nitride (P–Mo–N) sample catalyzes hydrogen evolution with potentials of 105, 145, and 157 mV at the current densities of 10, 50, and 100 mA/cm2, respectively, in 0.5 M H2SO4 solution with a small Tafel slope of 43 mV/dec. Thus it outperforms many of the state-of-art molybdenum-based hydrogen evolution catalysts reported to date.
- Subject
- hydrogen evolution; molybdenum nitride; air-stable molybdenum nitride; phosphorus doping
- Identifier
- http://hdl.handle.net/1959.13/1402745
- Identifier
- uon:35061
- Identifier
- ISSN:2399-3669
- Rights
- © The Author(s) 2018. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0 .
- Language
- eng
- Full Text
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