1. Ionic liquid‐assisted synthesis of N, F, and B co‐doped BiOBr/Bi2Se3 on Mo2CTx for enhanced performance in hydrogen evolution reaction and supercapacitors.
- Author
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Yi, Mingjie, Ren, Yi, Zhang, Xueting, Zhu, Zhenye, and Zhang, Jiaheng
- Subjects
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HYDROGEN evolution reactions , *SUPERCAPACITORS , *DOPING agents (Chemistry) , *SUPERCAPACITOR performance , *ENERGY density , *ELECTRONEGATIVITY - Abstract
We introduce a novel approach that utilizes an ionic liquid-assisted synthesis method to synthesize BiOBr material. This material is then loaded onto Mo 2 CT x , facilitating the formation of a BiOBr/Bi 2 Se 3 heterostructure through selenization treatment. The doping of heteroatoms improves the hydrophilicity and electronegativity of the material. The introduced heterojunction adjusts the electronic structure at the interface, resulting in a lower OH–/H+ adsorption energy. Due to the above advantages, the sample has excellent performance in HER and supercapacitor. [Display omitted] 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 Mo 2 CT x via a selenization treatment to create a BiOBr/Bi 2 Se 3 heterostructure, denoted as NBF-BiOBr/Bi 2 Se 3 /Mo 2 CT x. 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/Bi 2 Se 3 /Mo 2 CT x is 193.1 m2/g. In hydrogen evolution reaction (HER) tests, NBF-BiOBr/Bi 2 Se 3 /Mo 2 CT x exhibits exceptional catalytic performance in acidic media, requiring only an overpotential of 109 mV to achieve a current density of 10 mA cm−2. Furthermore, NBF-BiOBr/Bi 2 Se 3 /Mo 2 CT x demonstrates superior electrochemical performance in an asymmetric supercapacitor, with an energy density as high as 55.6 Wh kg−1 at a power density of 749.9 Wh kg−1. This work provides a novel approach for heteroatom doping and heterojunction synthesis, offering promising prospects for further advancements in the field. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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