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Ionic liquid-assisted synthesis of N, F, and B co-doped BiOBr/BiSe on MoCT for enhanced performance in hydrogen evolution reaction and supercapacitors. | LitMetric

Ionic liquid-assisted synthesis of N, F, and B co-doped BiOBr/BiSe on MoCT for enhanced performance in hydrogen evolution reaction and supercapacitors.

J Colloid Interface Sci

State Key Laboratory of Advanced Welding and Joining, Research Centre of Printed Flexible Electronics, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055, China. Electronic address:

Published: March 2024

Heteroatom doping and heterojunction formation are effective strategies to enhance electrochemical performance. In this study, we present a novel approach that utilizes an ionic liquid-assisted synthesis method to fabricate a BiOBr-based material, which is subsequently loaded onto MoCT via a selenization treatment to create a BiOBr/BiSe heterostructure, denoted as NBF-BiOBr/BiSe/MoCT. The incorporation of heteroatoms improves its hydrophilicity and electronegativity, while the formation of heterojunctions adjusts the electronic structure at the interface, resulting in lower OH/H adsorption energy. The specific surface area of NBF-BiOBr/BiSe/MoCT is 193.1 m/g. In hydrogen evolution reaction (HER) tests, NBF-BiOBr/BiSe/MoCT exhibits exceptional catalytic performance in acidic media, requiring only an overpotential of 109 mV to achieve a current density of 10 mA cm. Furthermore, NBF-BiOBr/BiSe/MoCT demonstrates superior electrochemical performance in an asymmetric supercapacitor, with an energy density as high as 55.6 Wh kg at a power density of 749.9 Wh kg. This work provides a novel approach for heteroatom doping and heterojunction synthesis, offering promising prospects for further advancements in the field.

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Source
http://dx.doi.org/10.1016/j.jcis.2023.12.029DOI Listing

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