NDLI: Self-templated formation of tremella-like MoS$_{2}$ with expanded spacing of (002) crystal planes for Li-ion batteries

Content Provider	Springer Nature Link
Author	Qu, Guoxin Cheng, Jianli Wang, Zhiyu Wang, Bin Ye, Shiyong
Copyright Year	2016
Abstract	Tremella-like MoS$_{2}$ consisting of ultrathin nanosheets (~7 nm in thickness) is prepared via a one-pot hydrothermal reaction without using any surfactants and templates. The reaction involves transforming precursor MoO$_{3}$ to polyhedral intermediate (K$_{2}$NaMoO$_{3}$F$_{3}$ and K$_{3}$Mo$_{2}$O$_{4}$F$_{5}$) through its reaction with Na$^{+}$, K$^{+}$, and F$^{−}$ ions in the initial stage of hydrothermal reaction. Then the polyhedral intermediate acting as the sacrifice template reacts with the S$^{2−}$ released from a hydrolysis process of SCN$^{−}$ ion and transforms to tremella-like MoS$_{2}$. The obtained MoS$_{2}$ product exhibits expended spacing of the (002) crystal plane, which can facilitate faster lithium ions intercalation behavior. This tremella-like MoS$_{2}$ used as an anode material for lithium-ion batteries shows a very high reversible capacity of 693 mA h g$^{−1}$ after 50 cycles, good rate capability, and high cyclic capacity retention. Even cycled at a high current density of 4800 mA g$^{−1}$, the tremella-like MoS$_{2}$ still can deliver a high capacity of 252 mA h g$^{−1}$. The secondary hierarchical microstructures consisting of ultrathin nanosheets are beneficial to greatly improved electrochemical performance of the MoS$_{2}$ electrode.
Starting Page	4739
Ending Page	4747
Page Count	9
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	51
Issue Number	10
e-ISSN	15734803
Language	English
Publisher	Springer US
Publisher Date	2016-02-12
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Materials Science Characterization and Evaluation of Materials Polymer Sciences Continuum Mechanics and Mechanics of Materials Crystallography Mechanics
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

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