Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 7, 2025

Abstract Rechargeable Mg batteries are an energy‐storage technology suitable for large‐scale applications, but the lack of high‐performance cathode materials is currently hindering their development. Conversion‐type cathodes break limits Mg‐intercalation principle, existing structural design strategies mostly focus on morphology optimization to increase active reaction interfaces. The present study reveals that crystal structure also plays a significant role in Mg‐storage activity conversion reactions. Two types CoSe 2 with orthorhombic and cubic phases synthesized from ZIF‐67 comparatively investigated as RMBs. Despite exhibiting similar micromorphology lower specific surface area, phase demonstrates superior capacity, rate performance, charge transfer resistance, higher solid‐state 2+ diffusion coefficients compared . Mechanism studies reveal more thorough reversible, involving redox both cations anions. Further theoretical computations indicate at (010) plane , along sites Se‒Se bonds, facilitates via co‐redox This underscores importance conversion‐type RMB materials.

Язык: Английский