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Issue 24, 2019
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Modulating the electronic structure of ultrathin layered double hydroxide nanosheets with fluorine: an efficient electrocatalyst for the oxygen evolution reaction

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Abstract

Herein, we effectively modulate the electronic structure of Co3Fe layered double hydroxides (LDHs) by F-doping using a CHF3-plasma etching technique. CHF3-plasma can selectively fill oxygen vacancies with F ions that can drastically tune the electronic structure with the highest electronegativity and create metal vacancies at the same time. The as-obtained F-Co3Fe LDH ultrathin nanosheets exhibit excellent oxygen evolution reaction (OER) properties. The outstanding electrochemical activity can be attributed to the incorporation of F ions that strongly modulate the charge distribution of surrounding atoms to facilitate the adsorption of OER intermediates. This work provides a simple way to create metal vacancies and selectively fill oxygen vacancies with fluorine at the same time, and brings about a deep understanding of the electronic environment-activity relationship of LDHs for the OER.

Graphical abstract: Modulating the electronic structure of ultrathin layered double hydroxide nanosheets with fluorine: an efficient electrocatalyst for the oxygen evolution reaction

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Publication details

The article was received on 12 Apr 2019, accepted on 21 May 2019 and first published on 23 May 2019


Article type: Communication
DOI: 10.1039/C9TA03882E
J. Mater. Chem. A, 2019,7, 14483-14488

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    Modulating the electronic structure of ultrathin layered double hydroxide nanosheets with fluorine: an efficient electrocatalyst for the oxygen evolution reaction

    Z. Liu, C. Dong, Y. Huang, J. Cen, H. Yang, X. Chen, X. Tong, D. Su, Y. Wang and S. Wang, J. Mater. Chem. A, 2019, 7, 14483
    DOI: 10.1039/C9TA03882E

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