Engineering Phase Transition from 2H to 1T in MoSe2 by W Cluster Doping toward Lithium-Ion Battery

Ke Wang; Yu Zhou; Lixun Cheng; Dongdong Li; Zhihao Hu; Shuangming Chen; Chuanqiang Wu; Li Song; Binghui Ge

doi:10.1021/acs.inorgchem.3c03311

Engineering Phase Transition from 2H to 1T in MoSe₂ by W Cluster Doping toward Lithium-Ion Battery

Inorg Chem. 2023 Dec 25;62(51):21257-21264. doi: 10.1021/acs.inorgchem.3c03311. Epub 2023 Dec 9.

Authors

Ke Wang¹, Yu Zhou², Lixun Cheng¹, Dongdong Li³, Zhihao Hu¹, Shuangming Chen⁴, Chuanqiang Wu¹, Li Song⁴, Binghui Ge¹

Affiliations

¹ Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China.
² The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, China.
³ Institute of Amorphous Matter Science, School of Materials Science and Engineering, Hefei University of Technology, Hefei, Anhui 230009, China.
⁴ National Synchrotron Radiation Lab, University of Science and Technology of China, Hefei, Anhui 230009, China.

PMID: 38069815
DOI: 10.1021/acs.inorgchem.3c03311

Abstract

Phase engineering synthesis strategy is extremely challenging to achieve stable metallic phase molybdenum diselenide for a better physicochemical property than the thermodynamically stable semiconducting phase. Herein, we introduce tungsten atom clusters into the MoSe₂ layered structure, realizing the phase transition from the 2H semiconductor to 1T metallic phase at a high temperature. The combination of synchrotron radiation X-ray absorption spectroscopy, Cs-corrected transmission electron microscopy, and theoretical calculation demonstrates that the aggregation doping of W atoms is the factor of MoSe₂ structure transformation. When utilizing this distinct structure as an anode component, it demonstrates outstanding rate capability and durability. After 500 cycles, this results in a specific capacity of 1007.4 mAh g^-1 at 500 mA g^-1. These discoveries could open the door for the future development of high-performance anodes for ion battery applications.