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dc.contributor.authorKim, Eun Jeong
dc.contributor.authorMa, Le Anh
dc.contributor.authorDuda, Laurent C
dc.contributor.authorPickup, David M
dc.contributor.authorChadwick, Alan V
dc.contributor.authorYounesi, Reza
dc.contributor.authorIrvine, John T. S.
dc.contributor.authorArmstrong, Robert
dc.identifier.citationKim , E J , Ma , L A , Duda , L C , Pickup , D M , Chadwick , A V , Younesi , R , Irvine , J T S & Armstrong , R 2020 , ' Oxygen redox activity through a reductive coupling mechanism in the P3-type nickel-doped sodium manganese oxide ' , ACS Applied Energy Materials , vol. Early View .
dc.identifier.otherPURE: 265916394
dc.identifier.otherPURE UUID: d4f7fc8a-92e0-4c35-a256-2aa6e70cbd5d
dc.identifier.otherORCID: /0000-0003-1937-0936/work/67919219
dc.identifier.otherORCID: /0000-0002-8394-3359/work/68280764
dc.identifier.otherScopus: 85078466797
dc.identifier.otherWOS: 000510104700024
dc.descriptionEJK would like to thank the Alistore ERI for the award of a studentship and Ok Sung Jeon at Yonsei University for ICP-OES measurement. The authors are grateful for the provision of beam time and assistance from instrument scientists at beamlines B18 at the Diamond Light source (as part of the Energy Materials Block Allocation Group SP14239), BL27SU at Spring 8 and GEM diffractometer at ISIS at the Rutherford Appleton Laboratory.en
dc.description.abstractIncreasing dependence on rechargeable batteries for energy storage calls for the improvement of energy density of batteries. Toward this goal, introduction of positive electrode materials with high voltage and/or high capacity is in high demand. The use of oxygen chemistry in lithium and sodium layered oxides has been of interest to achieve high capacity. Nevertheless, a complete understanding of oxygen-based redox processes remains elusive especially in sodium ion batteries. Herein, a novel P3-type Na0.67Ni0.2Mn0.8O2, synthesized at low temperature, exhibits oxygen redox activity in high potentials. Characterization using a range of spectroscopic techniques reveals the anionic redox activity is stabilized by the reduction of Ni, because of the strong Ni 3d–O 2p hybridization states created during charge. This observation suggests that different route of oxygen redox processes occur in P3 structure materials, which can lead to the exploration of oxygen redox chemistry for further development in rechargeable batteries.
dc.relation.ispartofACS Applied Energy Materialsen
dc.rightsCopyright © 2019 American Chemical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at
dc.subjectSodium ion batteriesen
dc.subjectLayered oxidesen
dc.subjectAnion redoxen
dc.subjectP3 structureen
dc.subjectReductive coupling mechanismen
dc.subjectResonant inelastic X-ray scatteringen
dc.subjectQD Chemistryen
dc.titleOxygen redox activity through a reductive coupling mechanism in the P3-type nickel-doped sodium manganese oxideen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews.School of Chemistryen
dc.description.statusPeer revieweden

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