The Effective 2D Interlayer Architecture of Cu₂WS₄@N-Doped Graphene Nanocomposite for Oxygen Reduction Reaction and Rechargeable Zn-Air Battery

A new research trend is exploring highly efficient and prolonged catalysts for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). Even though, it remains a considerable challenge to understand electrochemical performance enhancement in this field. Herein, we synthesized an interlayered architecture of Cu₂WS₄@NG nanocomposite and are reported as efficient cathode materials for flexible Zinc-Air batteries. Hierarchical porous interlayers create more active sites due to the unique interlayer architecture. As a result of the synergistic interaction between Cu₂WS₄@NG interfaces, the rate of charge transfer is facilitated, the number of active sites is increased, and OER/ORR kinetics is positively influenced in an alkaline environment. Theoretical studies indicate that the interlayered architecture tuning of the electronic structure of Cu₂WS₄@NG nanocomposite, which is significantly increases the electrical conductivity and catalytic activity. The prepared catalyst will be delivers an excellent half-wave potential for ORR and a low overpotential for OER. Furthermore, the quasi-solid state flexible ZACs will be fabricate and testing for commercial purpose.<br/><b>Acknowledgement</b><br/>This work was supported by the Technology development Program (RS-2023-00218808) funded by the Ministry of SMEs and Startups (MSS, Korea), Technology development Program (Project No.: S2960707) funded by the Ministry of SMEs and Startups (MSS, Korea). By the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science, and Technology (MEST) [grant numbers: 2021R1A2C1006010]. and by the Technology development Program (RS-2023-00218808) funded by the Ministry of SMEs and Startups (MSS, Korea)