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Title: Stereodefined codoping of sp-N and S atoms in few-layer graphdiyne for oxygen evolution reaction
Authors: Zhao, Yasong
Yang, Nailiang
Yao, Huiying
Liu, Daobin
Song, Li
Zhu, Jia
Li, Shuzhou
Gu, Lin
Lin, Kaifeng
Wang, Dan
Keywords: Engineering::Materials
Issue Date: 2019
Source: Zhao, Y., Yang, N., Yao, H., Liu, D., Song, L., Zhu, J., . . . Wang, D. (2019). Stereodefined codoping of sp-N and S atoms in few-layer graphdiyne for oxygen evolution reaction. Journal of the American Chemical Society, 141(18), 7240-7244. doi:10.1021/jacs.8b13695
Journal: Journal of the American Chemical Society
Abstract: Developing metal-free catalysts with high catalytic activity for oxygen evolution reaction (OER) is essentially important for energy and environment-related techniques. Compared with individual element doping, doping carbon materials with multiple heteroelements has more advantages for enhancing the OER performance. However, doped sites for the different atoms are highly uncontrollable under the reported methods, which hinder the deeper understanding on the relationship between structure and property, and also limit the enhancement of catalytic activity. Our latest research has reported a method to site-controlled introducing a new form of nitrogen atoms, i.e. sp-hybridized nitrogen (sp-N), into graphdiyne, showing its potential advantages in OER catalysis. Since the sites of sp-N atoms are defined in graphdiyne, and the doping sites for S atoms are well understood, the relative position between N and S can be further defined. It gives us a chance to understand deeply the mechanism in the N, S heteroelements doped metal-free catalyst. Experimental results present that the codoping of sp-N and S atoms brought an excellent OER performance with low overpotential and high current density owning to the effectively synergistic effect of the stereodefined heteroatoms.
ISSN: 0002-7863
DOI: 10.1021/jacs.8b13695
Rights: © 2019 American Chemical Society. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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