DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jung, Young Hwa | ko |
dc.contributor.author | Christiansen, Ane S. | ko |
dc.contributor.author | Johnsen, Rune E. | ko |
dc.contributor.author | Norby, Poul | ko |
dc.contributor.author | Kim, Do-Kyung | ko |
dc.date.accessioned | 2015-07-22T05:14:25Z | - |
dc.date.available | 2015-07-22T05:14:25Z | - |
dc.date.created | 2015-06-30 | - |
dc.date.created | 2015-06-30 | - |
dc.date.created | 2015-06-30 | - |
dc.date.issued | 2015-06 | - |
dc.identifier.citation | ADVANCED FUNCTIONAL MATERIALS, v.25, no.21, pp.3227 - 3237 | - |
dc.identifier.issn | 1616-301X | - |
dc.identifier.uri | http://hdl.handle.net/10203/200063 | - |
dc.description.abstract | Sodium layered oxides with mixed transition metals have received significant attention as positive electrode candidates for sodium-ion batteries because of their high reversible capacity. The phase transformations of layered compounds during electrochemical reactions are a pivotal feature for understanding the relationship between layered structures and electrochemical properties. A combination of in situ diffraction and ex situ X-ray absorption spectroscopy reveals the phase transition mechanism for the ternary transition metal system (Fe-Mn-Co) with P2 stacking. In situ synchrotron X-ray diffraction using a capillary-based microbattery cell shows a structural change from P2 to O2 in P2-Na0.7Fe0.4Mn0.4Co0.2O2 at the voltage plateau above 4.1 V on desodiation. The P2 structure is restored upon subsequent sodiation. The lattice parameter c in the O2 structure decreases significantly, resulting in a volumetric contraction of the lattice toward a fully charged state. Observations on the redox behavior of each transition metal in P2-Na0.7Fe0.4Mn0.4Co0.2O2 using X-ray absorption spectroscopy indicate that all transition metals are involved in the reduction/oxidation process. | - |
dc.language | English | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.subject | SODIUM-ION BATTERIES | - |
dc.subject | RECHARGEABLE NA BATTERIES | - |
dc.subject | CATHODE MATERIAL | - |
dc.subject | HIGH-CAPACITY | - |
dc.subject | ABSORPTION SPECTROSCOPY | - |
dc.subject | ELECTRODE PERFORMANCE | - |
dc.subject | POSITIVE ELECTRODE | - |
dc.subject | SOLID-SOLUTION | - |
dc.subject | INTERCALATION | - |
dc.subject | OXIDE | - |
dc.title | In Situ X-Ray Diffraction Studies on Structural Changes of a P2 Layered Material during Electrochemical Desodiation/Sodiation | - |
dc.type | Article | - |
dc.identifier.wosid | 000355635300014 | - |
dc.identifier.scopusid | 2-s2.0-85027917391 | - |
dc.type.rims | ART | - |
dc.citation.volume | 25 | - |
dc.citation.issue | 21 | - |
dc.citation.beginningpage | 3227 | - |
dc.citation.endingpage | 3237 | - |
dc.citation.publicationname | ADVANCED FUNCTIONAL MATERIALS | - |
dc.identifier.doi | 10.1002/adfm.201500469 | - |
dc.contributor.localauthor | Kim, Do-Kyung | - |
dc.contributor.nonIdAuthor | Christiansen, Ane S. | - |
dc.contributor.nonIdAuthor | Johnsen, Rune E. | - |
dc.contributor.nonIdAuthor | Norby, Poul | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | in situ XRD | - |
dc.subject.keywordAuthor | layered structures | - |
dc.subject.keywordAuthor | positive electrode materials | - |
dc.subject.keywordAuthor | sodium-ion batteries | - |
dc.subject.keywordPlus | SODIUM-ION BATTERIES | - |
dc.subject.keywordPlus | RECHARGEABLE NA BATTERIES | - |
dc.subject.keywordPlus | CATHODE MATERIAL | - |
dc.subject.keywordPlus | HIGH-CAPACITY | - |
dc.subject.keywordPlus | ABSORPTION SPECTROSCOPY | - |
dc.subject.keywordPlus | ELECTRODE PERFORMANCE | - |
dc.subject.keywordPlus | POSITIVE ELECTRODE | - |
dc.subject.keywordPlus | SOLID-SOLUTION | - |
dc.subject.keywordPlus | INTERCALATION | - |
dc.subject.keywordPlus | OXIDE | - |
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