In-situ neutron diffraction study of the MoS2 anode using a custom-built Li-ion battery

Neeraj Sharma; Guodong Du; Andrew J. Studer; Zaiping Guo; Vanessa K. Peterson

doi:10.1016/j.ssi.2011.07.015

In-situ neutron diffraction study of the MoS₂ anode using a custom-built Li-ion battery

Neeraj Sharma
, Guodong Du
, Andrew J. Studer
, Zaiping Guo
, Vanessa K. Peterson

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

65 Citations (Scopus)

Abstract

This work presents the first in-situ neutron diffraction study of the MoS₂ electrode, undertaken in a custom-built Li-ion battery during discharge. A review of custom-designed cells for in-situ neutron diffraction experiments is presented along with our optimised cell, which we use to show real-time information corresponding to Li-insertion into MoS₂ via disappearance of the (103) reflection and increase in the d-spacing of the (002) reflection. The changes in the diffraction patterns begin at the 1.1 V plateau and are complete during the 0.5 V plateau. Sequential Rietveld-refinement indicates the presence of an intermediate lithiated phase (Li _xMoS₂) between MoS₂ and LiMoS₂. We observe the disappearance of all reflections for the MoS₂, corresponding to the loss of long-range order, during the 0.5 V plateau and no new diffraction peaks appear with further electrochemical cycling. This result is indicative of a transformation from long-range ordered MoS₂ to short-range ordered LiMoS₂, a result that we confirm using ex-situ synchrotron X-ray and neutron diffraction. © 2011 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	37-43
Journal	Solid State Ionics
Volume	199-200
Issue number	1
DOIs	https://doi.org/10.1016/j.ssi.2011.07.015
Publication status	Published - 28 Sept 2011
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

Part of this project was supported by the Australian Research Council (ARC) through an ARC Discovery project ( DP0878611 ). This research was undertaken on the Powder Diffraction beamline at the Australian Synchrotron, Victoria, Australia and we would like to thank Dr. Justin Kimpton for his assistance.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Research Keywords

Energy-storage
Ex-situ diffraction
In-situ neutron diffraction
Li-ion batteries
Time-dependent studies

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10.1016/j.ssi.2011.07.015

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Cite this

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title = "In-situ neutron diffraction study of the MoS2 anode using a custom-built Li-ion battery",

abstract = "This work presents the first in-situ neutron diffraction study of the MoS2 electrode, undertaken in a custom-built Li-ion battery during discharge. A review of custom-designed cells for in-situ neutron diffraction experiments is presented along with our optimised cell, which we use to show real-time information corresponding to Li-insertion into MoS2 via disappearance of the (103) reflection and increase in the d-spacing of the (002) reflection. The changes in the diffraction patterns begin at the 1.1 V plateau and are complete during the 0.5 V plateau. Sequential Rietveld-refinement indicates the presence of an intermediate lithiated phase (Li xMoS2) between MoS2 and LiMoS2. We observe the disappearance of all reflections for the MoS2, corresponding to the loss of long-range order, during the 0.5 V plateau and no new diffraction peaks appear with further electrochemical cycling. This result is indicative of a transformation from long-range ordered MoS2 to short-range ordered LiMoS2, a result that we confirm using ex-situ synchrotron X-ray and neutron diffraction. {\textcopyright} 2011 Elsevier B.V. All rights reserved.",

keywords = "Energy-storage, Ex-situ diffraction, In-situ neutron diffraction, Li-ion batteries, Time-dependent studies",

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AB - This work presents the first in-situ neutron diffraction study of the MoS2 electrode, undertaken in a custom-built Li-ion battery during discharge. A review of custom-designed cells for in-situ neutron diffraction experiments is presented along with our optimised cell, which we use to show real-time information corresponding to Li-insertion into MoS2 via disappearance of the (103) reflection and increase in the d-spacing of the (002) reflection. The changes in the diffraction patterns begin at the 1.1 V plateau and are complete during the 0.5 V plateau. Sequential Rietveld-refinement indicates the presence of an intermediate lithiated phase (Li xMoS2) between MoS2 and LiMoS2. We observe the disappearance of all reflections for the MoS2, corresponding to the loss of long-range order, during the 0.5 V plateau and no new diffraction peaks appear with further electrochemical cycling. This result is indicative of a transformation from long-range ordered MoS2 to short-range ordered LiMoS2, a result that we confirm using ex-situ synchrotron X-ray and neutron diffraction. © 2011 Elsevier B.V. All rights reserved.

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KW - Time-dependent studies

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