Ionic liquid-assisted synthesis of N, F, and B co-doped BiOBr/Bi2Se3 on Mo2CTx for enhanced performance in hydrogen evolution reaction and supercapacitors

Mingjie Yi; Yi Ren; Xueting Zhang; Zhenye Zhu; Jiaheng Zhang

doi:10.1016/j.jcis.2023.12.029

Ionic liquid-assisted synthesis of N, F, and B co-doped BiOBr/Bi₂Se₃ on Mo₂CT_x for enhanced performance in hydrogen evolution reaction and supercapacitors

J Colloid Interface Sci. 2024 Mar 15:658:334-342. doi: 10.1016/j.jcis.2023.12.029. Epub 2023 Dec 9.

Authors

Mingjie Yi¹, Yi Ren², Xueting Zhang², Zhenye Zhu³, Jiaheng Zhang⁴

Affiliations

¹ College of Environmental and Biological Engineering, Fujian Provincial Key Laboratory of Ecology-Toxicological Effects & Control for Emerging Contaminants, Key Laboratory of Ecological Environment and Information Atlas (Putian University) Fujian Provincial University, Putian University, Putian 351100, China; 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.
² 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.
³ 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: zhuzy@hit.edu.cn.
⁴ 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: zhangjiaheng@hit.edu.cn.

PMID: 38113542
DOI: 10.1016/j.jcis.2023.12.029

Abstract

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 Mo₂CT_x via a selenization treatment to create a BiOBr/Bi₂Se₃ heterostructure, denoted as NBF-BiOBr/Bi₂Se₃/Mo₂CT_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/Bi₂Se₃/Mo₂CT_x is 193.1 m²/g. In hydrogen evolution reaction (HER) tests, NBF-BiOBr/Bi₂Se₃/Mo₂CT_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/Bi₂Se₃/Mo₂CT_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.

Keywords: BiOBr; Hydrogen evolution; Ionic liquid; Supercapacitors.