Niobium‐Based Chalcogenides as Emerging Electrode Materials for Rechargeable Batteries

ABSTRACT Niobium (Nb)‐based transition metal chalcogenides (Nb‐TMCs), including NbS 2 , NbSe 2 , and NbTe 2 , have attracted considerable attention as promising two‐dimensional (2D) materials for rechargeable batteries because of their layered crystal structures, high electrical conductivity, tunable electronic properties, and favorable ion‐storage characteristics. This review provides a comprehensive overview of the recent advances in Nb‐based TMCs for rechargeable battery applications. First, the crystal structures, physicochemical properties, and synthesis strategies of NbS 2 , NbSe 2 , and NbTe 2 are systematically discussed, with particular emphasis on the relationships between structural characteristics and electrochemical behavior. Subsequently, their applications in various rechargeable battery systems, including lithium‐, sodium‐, potassium‐, and other emerging batteries, are critically reviewed by highlighting their distinct functional roles and charge‐storage mechanisms. In addition, a comparative analysis of NbS 2 , NbSe 2 , and NbTe 2 is presented to elucidate how the evolution of the chalcogen species influences electronic conductivity, ion transport, structural stability, and overall electrochemical performance. Finally, the current challenges and future research perspectives are discussed to promote the rational design and practical implementation of Nb‐based TMCs for next‐generation energy‐storage technologies. By establishing the structure–property–performance relationships of Nb‐based chalcogenides, this review provides a focused perspective and valuable guidance for the development of high‐performance rechargeable battery materials.