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Spinel–rock salt transformation in LiCoMnO4−δ
dc.contributor.author | Reeves-McLaren, Nik | |
dc.contributor.author | Sharp, Joanne | |
dc.contributor.author | Beltrán Mir, Héctor | |
dc.contributor.author | Rainforth, William | |
dc.contributor.author | West, Anthony R. | |
dc.date.accessioned | 2017-06-27T10:09:40Z | |
dc.date.available | 2017-06-27T10:09:40Z | |
dc.date.issued | 2016 | |
dc.identifier.citation | Reeves-McLaren N, Sharp J, Beltrán-Mir H, Rainforth WM, West AR. 2016 Spinel–rock salt transformation in LiCoMnO4−δ.Proc. R. Soc. A 472: 20140991. http://dx.doi.org/10.1098/rspa.2014.0991 | ca_CA |
dc.identifier.issn | 1364-5021 | |
dc.identifier.issn | 1471-2946 | |
dc.identifier.uri | http://hdl.handle.net/10234/168107 | |
dc.description.abstract | The transformation on heating LiCoMnO4, with a spinel structure, to LiCoMnO3, with a cationdisordered rock salt structure, accompanied by loss of 25% of the oxygen, has been followed using a combination of diffraction, microscopy and spectroscopy techniques. The transformation does not proceed by a topotactic mechanism, even though the spinel and rock salt phases have a similar, cubic close-packed oxygen sublattice. Instead, the transformation passes through two stages involving, first, precipitation of Li2MnO3, leaving behind a Li-deficient, Co-rich non-stoichiometric spinel and, second, rehomogenization of the two-phase assemblage, accompanied by additional oxygen loss, to give the homogeneous rock salt final product; a combination of electron energy loss spectroscopy and X-ray absorption near edge structure analyses showed oxidation states of Co2+ and Mn3+ in LiCoMnO3. Subsolidus phase diagram determination of the Li2O-CoOx-MnOy system has established the compositional extent of spinel solid solutions at approximately 500◦C. | ca_CA |
dc.format.extent | 20 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | The Royal Society | ca_CA |
dc.rights | Creative Commons Attribution License http://creativecommons.org/licenses/ by/4.0/, which permits unrestricted use, provided the original author and source are credited. | ca_CA |
dc.rights | Atribución 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-sa/4.0/ | * |
dc.subject | LiCoMnO4 | ca_CA |
dc.subject | Rietveld | ca_CA |
dc.subject | electron energy loss spectroscopy | ca_CA |
dc.subject | X-ray absorption near edge structure | ca_CA |
dc.subject | Raman | ca_CA |
dc.subject | oxygen loss | ca_CA |
dc.title | Spinel–rock salt transformation in LiCoMnO4−δ | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1098/rspa.2014.0991 | |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | ca_CA |
dc.relation.publisherVersion | http://rspa.royalsocietypublishing.org/content/472/2185/20140991#page | ca_CA |
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