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Oxygen Redox Activi...
Oxygen Redox Activity through a Reductive Coupling Mechanism in the P3-Type Nickel-Doped Sodium Manganese Oxide
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- Kim, Eun Jeong (author)
- Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland;ALISTORE ERI, F-80039 Amiens, France
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- Ma, Le Anh, 1992- (author)
- Uppsala universitet,Strukturkemi
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- Duda, Laurent (author)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- Pickup, David M. (author)
- Univ Kent, Sch Phys Sci, Canterbury CT2 7NH, Kent, England
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- Chadwick, Alan V. (author)
- Univ Kent, Sch Phys Sci, Canterbury CT2 7NH, Kent, England
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- Younesi, Reza (author)
- Uppsala universitet,Strukturkemi,ALISTORE ERI, F-80039 Amiens, France
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- Irvine, John T. S. (author)
- Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland
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- Armstrong, A. Robert (author)
- Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland;ALISTORE ERI, F-80039 Amiens, France
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(creator_code:org_t)
- 2019-12-26
- 2020
- English.
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In: ACS Applied Energy Materials. - : AMER CHEMICAL SOC. - 2574-0962. ; 3:1, s. 184-191
- Related links:
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https://kar.kent.ac....
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Increasing 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.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- sodium ion batteries
- layered oxides
- anion redox
- P3 structure
- reductive coupling mechanism
- resonant inelastic X-ray scattering
Publication and Content Type
- ref (subject category)
- art (subject category)
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