In-situ neutron diffraction study of the MoS2 anode using a custom-built li-ion battery
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Date
2011-09-28
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Elsevier
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 (LixMoS2) 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 Ltd.
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Keywords
Neutron diffraction, Anodes, Radioisotope batteries, Lithium ions, Energy storage, X-ray diffraction
Citation
Sharma, N., Du, G. D., Studer, A. J., Guo, Z. P., Peterson, V. K. (2011). In-situ neutron diffraction study of the MoS2 anode using a custom-built li-ion battery. Solid State Ionics, 199-200, 37-43. doi:10.1016/j.ssi.2011.07.015