In-situ neutron diffraction study of the simultaneous structural evolution of a LiNi0.5Mn1.5O4 cathode and a Li4Ti5O12 anode in a LiNi0.5Mn1.5O4 parallel to Li4Ti5O12 full cell

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dc.contributor.authorPang, WKen_AU
dc.contributor.authorSharma, Nen_AU
dc.contributor.authorPeterson, VKen_AU
dc.contributor.authorShiu, JJen_AU
dc.contributor.authorWu, SHen_AU
dc.date.accessioned2014-07-04T05:19:58Zen_AU
dc.date.available2014-07-04T05:19:58Zen_AU
dc.date.issued2014-01-15en_AU
dc.date.statistics2014-07-04en_AU
dc.description.abstractIn this study, the application of neutron powder diffraction on studying the time-resolved structural evolution of a cell comprised with LiNi0.5Mn1.5O4 cathode and Li4Ti5O12 anode during charge–discharge cycling is demonstrated. As expected, the lattices of the LiNi0.5Mn1.5O4 cathode and the Li4Ti5O12 anode in the cell are found to simultaneously contract during charging and expand during discharging. It is found that for the LiNi0.5Mn1.5O4 cathode a solid-solution reaction is associated with the lattice change and the Ni2+/Ni3+ redox couple between 3.06 and 3.16 V (vs. Li4Ti5O12), and a two-phase reaction between LixNi0.5Mn1.5O4 and Ni0.25Mn0.75O2 is corresponding to the Ni3+/Ni4+ redox couple at voltage higher than 3.22 V (vs. Li4Ti5O12) without a corresponding change in lattice. The oxidation states of the metals in the electrodes are determined by tracking the associated change in the oxygen position. In addition, the Ti oxidation state is correlated to the intensity of the Li4Ti5O12 222 reflection at the anode, and the determined oxidation state of the Ni is correlated to the lithium occupancy within the cathode. Furthermore, the small volume changes of the cathode and the anode upon cycling suggest that the cell chemistry is favorable for practical applications. © 2014, Elsevier Ltd.en_AU
dc.identifier.citationPang, W. K., Sharma, N., Peterson, V K., Shiu, J. J., & Wu, S. H. (2014). In-situ neutron diffraction study of the simultaneous structural evolution of a LiNi0.5Mn1.5O4 cathode and a Li4Ti5O12 anode in a LiNi0.5Mn1.5O4 parallel to Li4Ti5O12 full cell. Journal of Power Sources, 246, 464-472. doi:10.1016/j.jpowsour.2013.07.114en_AU
dc.identifier.govdoc5446en_AU
dc.identifier.issn0378-7753en_AU
dc.identifier.journaltitleJournal of Power Sourcesen_AU
dc.identifier.pagination464-472en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.jpowsour.2013.07.114en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/5733en_AU
dc.identifier.volume246en_AU
dc.language.isoenen_AU
dc.publisherElsevier Science BVen_AU
dc.subjectLithiumen_AU
dc.subjectNeutronsen_AU
dc.subjectIonsen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectTitanium oxidesen_AU
dc.subjectNickelen_AU
dc.titleIn-situ neutron diffraction study of the simultaneous structural evolution of a LiNi0.5Mn1.5O4 cathode and a Li4Ti5O12 anode in a LiNi0.5Mn1.5O4 parallel to Li4Ti5O12 full cellen_AU
dc.typeJournal Articleen_AU
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