Observation of an intermediate state during lithium intercalation of twisted bilayer MoS2

• DOI: 10.1038/s41467-022-30516-z
• Publication Date: 2022-05-30T10:04:34Z
• Authors: Yecun Wu; Jingyang Wang; Yanbin Li; Jiawei Zhou; Bai Yang Wang; Ankun Yang; Lin-Wang Wang; Harold Y. Hwang; Yi Cui
• Keywords: Science; Q; 02 engineering and technology; 0210 nano-technology; Article

Abstract Lithium intercalation of MoS 2 is generally believed to introduce a phase transition from H (semiconducting) T (metallic). However, during the process, spatially sharp boundary usually formed between fully intercalated and non-intercalated . The intermediate state, i.e ., lightly without transition, difficult investigate by optical-microscope-based spectroscopy due narrow size. Here, we report stabilization state across whole flake twisted bilayer system allows lithium intercalate top surface enables fast Li-ion diffusion reduced interlayer interaction. E 2g Raman mode shows peak splitting behavior. Our simulation results indicate that stabilized lithium-induced symmetry breaking provide an insight into non-uniform battery charging discharging, also open new opportunity modulate properties 2D systems with guest species doping in Moiré structures.