J. Mater. Sci. Technol. ›› 2025, Vol. 207: 255-265.DOI: 10.1016/j.jmst.2024.03.078

• Research article • Previous Articles     Next Articles

Superior electro-catalytic performance achieved by the negatively charged boron atom on BC3/TM/graphene sandwich heterostructures

Juan Xiea,b, Jiawen Wangc,d, Yunpeng Shub, Juan Yanga,*, Youyong Lic,d,*, Huilong Dongb,e,*   

  1. aSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China;
    bSchool of Materials Engineering, Changshu Institute of Technology, Changshu 215500, China;
    cInstitute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China;
    dMacao Institute of Materials Science and Engineering, Macau University of Science and Technology, Taipa 999078, Macau SAR, China;
    eNational Center for International Research on Intelligent Nano-Materials and Detection Technology in Environmental Protection, Soochow University, Suzhou 215123, China
  • Received:2024-01-22 Revised:2024-03-19 Accepted:2024-03-22 Published:2025-02-01 Online:2024-05-25
  • Contact: *E-mail addresses: . yangjuan6347@ujs.edu.cn (J. Yang), yyli@suda.edu.cn (Y. Li), huilong_dong@126.com (H. Dong)

Abstract: The sandwich heterostructures (SHSs) are novel two-dimensional materials that hold great potential as efficient electro-catalysts. In this work, we computationally designed the BC3/TM/Gr SHSs by intercalating transition metal atoms into the BC3/graphene heterostructure. After the computational screening, only BC3/Sc/Gr, BC3/Ti/Gr, BC3/Y/Gr and BC3/Zr/Gr are validated as stable SHSs. The electron donation from the intercalated TM atom results in the formation of the negatively charged boron atom (Bδ-) and activation of the BC3 surface, making the BC3/TM/Gr SHSs highly promising as single-atom catalysts (SACs). The BC3/Sc/Gr and BC3/Y/Gr SHSs exhibit potential in carbon dioxide reduction reaction (CO2RR) and carbon monoxide reduction reaction (CORR) electro-catalysis. Particularly, when BC3/Y/Gr SHS serves as CORR electro-catalyst, the step (*CHO→*CHOH) is a potential determining step, with an extremely low limiting potential (UL = -0.10 V). The BC3/Ti/Gr and BC3/Zr/Gr SHSs are suitable as hydrogen evolution reaction (HER) electro-catalysts. Specially, the BC3/Ti/Gr SHS serves as an ideal HER electro-catalyst in acid condition, with close-to-zero adsorption free energy (ΔGH = 0.006 eV) and fairly low overall activation barrier (0.20 eV). By analyzing the electronic properties, the unique adsorption activity of the Bδ- on H atom and unsaturated CO2RR intermediates is elucidated as the origin of excellent catalytic activity of BC3/TM/Gr SHSs, which is modulated by the intercalated TM atom. Our work is instructive to rational design of SACs towards energy conversion based on non-metal elements.

Key words: Single-atom catalysts, Heterostructure, Transition metal intercalation, DFT calculation, CO2 reduction, Hydrogen evolution reaction