Tungsten Sulfide with Expanded Interlayer for Long‐Life and Wide‐Temperature Mg‐Ion Batteries

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 9, 2025

Abstract Magnesium ion batteries (MIBs) receive concentrated attention owing to their high intrinsic advantages such as theoretical volumetric energy densities. However, poor cycling performances and low‐temperature electrochemical properties remain major technical issues in MIBs. Electrode materials impose a great influence on the characteristics of 2D transition metal dichalcogenides (TMDs) are potentially excellent electrode for MIBs account open framework outstanding characteristics. In this work, pre‐intercalation modification strategy is adopted design K + pre‐intercalated WS 2 material Structural characterizations density functional theory (DFT) calculations demonstrate that Mg 2+ diffusion barrier effectively lowered accompanied by interlayer expansion layered structure, aiding quick reliable storage. Consequently, K‐WS demonstrates performances, reversible capacity 217 mA h g −1 at 0.2 A with stability. addition, capable running smoothly low temperatures, showing superior preservation 97% upon completion 1000 cycles −30 °C. This work supplies an uplifting means optimization cutting‐edge

Language: Английский

Covalent organic framework-based cathodes for beyond lithium-ion batteries

Communications Materials, Journal Year: 2025, Volume and Issue: 6(1)

Published: April 21, 2025

Language: Английский