High‐Entropy 1T‐Phase Quantum Sheets of Transition‐Metal Disulfides

• DOI: 10.1002/adma.202500321
• Publication Date: 2025-02-21T12:08:06Z
• Authors: Haiyang Wang; Yu Shi; Ming Li; Yuxuan Ye; Yongzheng Zhang; Tao Rong; Ziming Wang; Jikai Zhang; Hao Chen; Yi Tao; Qi Zhao; Jianan Gu; Fazhi Ye; Liqiang Mai; Zhiguo Du; Shubin Yang

Quantum sheets of transition-metal dichalcogenides (TMDs) are promising nanomaterials owing to the combination both 2D nanosheets and quantum dots with distinctive properties. However, usually possess semiconducting behavior associated 2H phase, it remains challenging produce 1T-phase due easy sliding basal plane susceptible small lateral sizes. Here, an efficient high-entropy strategy is developed disulfides based on controllable introduction multiple metal atoms large size differences retard plane. The key topological conversion in-plane ordered carbide laminates (i-MAX) compatible high strains 1T which facilely triggers fracture into average 4.5 nm thickness 0.7 during exfoliation process. Thus, disulfide show electrocatalytic activities for lithium polysulfides, achieving a good rate performance 744 mAh g-1 at 5 C long cycle stability in lithium-sulfur batteries.