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

Inorg Chem

Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China.

Published: December 2023


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Article 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 MoSe 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 MoSe 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 at 500 mA g. These discoveries could open the door for the future development of high-performance anodes for ion battery applications.

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http://dx.doi.org/10.1021/acs.inorgchem.3c03311DOI Listing

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