Engineering defects in MoS2 cathodes for high-performance aqueous zinc-ion batteries
Chen Xin, Dan Yang, Heru Setyawan, Yaoxin Zhang, Ting Xiong
Abstract
Rechargeable aqueous zinc-ion batteries (AZIBs) have emerged as a promising candidate for next-generation energy storage systems, owing to their intrinsic safety, environmental benignity, cost efficiency, and favorable electrochemical compatibility. Recently, MoS 2 with its distinctive layered architecture and adjustable interlayer spacing, has been identified as a highly promising cathode material for AZIBs through defect engineering strategies. This review comprehensively examines recent advancements in defect engineering strategies for MoS 2 , elucidating the mechanistic roles of various defects including sulfur vacancies, molybdenum vacancies, metal/nonmetal doping, edge defects, and hybrid defects, in modulating electronic structures, optimizing ion transport kinetics, and enhancing interfacial interactions. Furthermore, the review highlights the resultant performance improvements. Finally, prospective research directions are proposed to refine defect engineering approaches, aiming to further boost the electrochemical performance of MoS 2 -based cathodes for next-generation AZIBs.