journal article·2024-07-02Open access

Lithiation Induced Phases in 1T′-MoTe2 Nanoflakes

Shiyu Xu, Kenneth Evans-Lutterodt, Shunran Li, Natalie L. Williams, Bowen Hou, Jason J. Huang, Matthew G. Boebinger, Sihun Lee, Mengjing Wang, Andrej Singer, Peijun Guo, Diana Y. Qiu, Judy J. Cha

ACS Nano· Volume 18· Issue 26

Abstract

Multiple polytypes of MoTe 2 with distinct structures and intriguing electronic properties can be accessed by various physical and chemical approaches. Here, we report electrochemical lithium (Li) intercalation into 1T′-MoTe 2 nanoflakes, leading to the discovery of two previously unreported lithiated phases. Distinguished by their structural differences from the pristine 1T′ phase, these distinct phases were characterized using in situ polarization Raman spectroscopy and in situ single-crystal X-ray diffraction. The lithiated phases exhibit increasing resistivity with decreasing temperature, and their carrier densities are two to 4 orders of magnitude smaller than the metallic 1T′ phase, as probed through in situ Hall measurements. The discovery of these gapped phases in initially metallic 1T′-MoTe 2 underscores electrochemical intercalation as a potent tool for tuning the phase stability and electron density in two-dimensional (2D) materials.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: 2D Materials and Applications · Graphene research and applications · MXene and MAX Phase Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, United States

Department of Mechanical Engineering and Materials Science, Yale University, New Haven, Connecticut 06511, United States

National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States

Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States

Energy Sciences Institute, Yale West Campus, West Haven, Connecticut 06516, United States

Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States

Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, Tennessee 37830 United States

Funding

Energy Frontier Research Centers · Air Force Office of Scientific Research · David and Lucile Packard Foundation · Division of Chemical, Bioengineering, Environmental, and Transport Systems

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