NDLI: Atomic mechanism of dynamic electrochemical lithiation processes of MoS₂ nanosheets.

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Atomic mechanism of dynamic electrochemical lithiation processes of MoS₂ nanosheets.

Content Provider	Semantic Scholar
Author	Wang, Lifen Xu, Zhi Wang, Wenlong Bai, Xuedong
Copyright Year	2014
Abstract	Layered molybdenum disulfide (MoS2) has been studied for decades for its diversity of structure and properties, where the structural dynamic evolution during lithium intercalation is an important but still indistinct, controversial topic. Here the electrochemical dynamic process of MoS2 nanosheets upon lithium intercalation has been systematically investigated by in situ high-resolution transmission electron microscopy. The results indicate that the lithiated MoS2 undergoes a trigonal prismatic (2H)-octahedral (1T) phase transition with a lithium ion occupying the interlayer S-S tetrahedron site in the 1T-LiMoS2. A pseudoperiodic structural modulation composed of polytype superlattices is also revealed as a consequence of the electron-lattice interaction. Furthermore, the shear mechanism of the 2H-1T phase transition has been confirmed by probing the dynamic phase boundary movement. The in situ real-time characterization at atomic scale provides a great leap forward in the fundamental understanding of the lithium ion storage mechanism in MoS2, which should be also of help for other transition metal dichalcogenides.
Starting Page	1285
Ending Page	1297
Page Count	13
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.iphy.ac.cn/xwzx/kydt/201405/P020140523416281337263.pdf
PubMed reference number	24725137v1
Alternate Webpage(s)	https://doi.org/10.1021/ja501686w
DOI	10.1021/ja501686w
Journal	Journal of the American Chemical Society
Volume Number	136
Issue Number	18
Language	English
Access Restriction	Open
Subject Keyword	Ions Molybdenum Phase Transition Transition Elements Transmission Electron Microscopy anatomical layer lithium cation negative regulation of iron-sulfur-molybdenum cofactor assembly
Content Type	Text
Resource Type	Article

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