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Atomic-level polarization in electric fields of defects for electrocatalysis

The thriving field of atomic defect engineering towards advanced electrocatalysis relies on the critical role of electric field polarization at the atomic scale. While this is proposed theoretically, the spatial configuration, orientation, and correlation with specific catalytic properties of materi...

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Autores principales: Xu, Jie, Xue, Xiong-Xiong, Shao, Gonglei, Jing, Changfei, Dai, Sheng, He, Kun, Jia, Peipei, Wang, Shun, Yuan, Yifei, Luo, Jun, Lu, Jun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10686988/
https://www.ncbi.nlm.nih.gov/pubmed/38030621
http://dx.doi.org/10.1038/s41467-023-43689-y
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author Xu, Jie
Xue, Xiong-Xiong
Shao, Gonglei
Jing, Changfei
Dai, Sheng
He, Kun
Jia, Peipei
Wang, Shun
Yuan, Yifei
Luo, Jun
Lu, Jun
author_facet Xu, Jie
Xue, Xiong-Xiong
Shao, Gonglei
Jing, Changfei
Dai, Sheng
He, Kun
Jia, Peipei
Wang, Shun
Yuan, Yifei
Luo, Jun
Lu, Jun
author_sort Xu, Jie
collection PubMed
description The thriving field of atomic defect engineering towards advanced electrocatalysis relies on the critical role of electric field polarization at the atomic scale. While this is proposed theoretically, the spatial configuration, orientation, and correlation with specific catalytic properties of materials are yet to be understood. Here, by targeting monolayer MoS(2) rich in atomic defects, we pioneer the direct visualization of electric field polarization of such atomic defects by combining advanced electron microscopy with differential phase contrast technology. It is revealed that the asymmetric charge distribution caused by the polarization facilitates the adsorption of H*, which originally activates the atomic defect sites for catalytic hydrogen evolution reaction (HER). Then, it has been experimentally proven that atomic-level polarization in electric fields can enhance catalytic HER activity. This work bridges the long-existing gap between the atomic defects and advanced electrocatalysis by directly revealing the angstrom-scale electric field polarization and correlating it with the as-tuned catalytic properties of materials; the methodology proposed here could also inspire future studies focusing on catalytic mechanism understanding and structure-property-performance relationship.
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spelling pubmed-106869882023-11-30 Atomic-level polarization in electric fields of defects for electrocatalysis Xu, Jie Xue, Xiong-Xiong Shao, Gonglei Jing, Changfei Dai, Sheng He, Kun Jia, Peipei Wang, Shun Yuan, Yifei Luo, Jun Lu, Jun Nat Commun Article The thriving field of atomic defect engineering towards advanced electrocatalysis relies on the critical role of electric field polarization at the atomic scale. While this is proposed theoretically, the spatial configuration, orientation, and correlation with specific catalytic properties of materials are yet to be understood. Here, by targeting monolayer MoS(2) rich in atomic defects, we pioneer the direct visualization of electric field polarization of such atomic defects by combining advanced electron microscopy with differential phase contrast technology. It is revealed that the asymmetric charge distribution caused by the polarization facilitates the adsorption of H*, which originally activates the atomic defect sites for catalytic hydrogen evolution reaction (HER). Then, it has been experimentally proven that atomic-level polarization in electric fields can enhance catalytic HER activity. This work bridges the long-existing gap between the atomic defects and advanced electrocatalysis by directly revealing the angstrom-scale electric field polarization and correlating it with the as-tuned catalytic properties of materials; the methodology proposed here could also inspire future studies focusing on catalytic mechanism understanding and structure-property-performance relationship. Nature Publishing Group UK 2023-11-29 /pmc/articles/PMC10686988/ /pubmed/38030621 http://dx.doi.org/10.1038/s41467-023-43689-y Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Xu, Jie
Xue, Xiong-Xiong
Shao, Gonglei
Jing, Changfei
Dai, Sheng
He, Kun
Jia, Peipei
Wang, Shun
Yuan, Yifei
Luo, Jun
Lu, Jun
Atomic-level polarization in electric fields of defects for electrocatalysis
title Atomic-level polarization in electric fields of defects for electrocatalysis
title_full Atomic-level polarization in electric fields of defects for electrocatalysis
title_fullStr Atomic-level polarization in electric fields of defects for electrocatalysis
title_full_unstemmed Atomic-level polarization in electric fields of defects for electrocatalysis
title_short Atomic-level polarization in electric fields of defects for electrocatalysis
title_sort atomic-level polarization in electric fields of defects for electrocatalysis
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10686988/
https://www.ncbi.nlm.nih.gov/pubmed/38030621
http://dx.doi.org/10.1038/s41467-023-43689-y
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