Journal article
Controlling iron versus oxygen redox in the layered cathode Na0.67Fe0.5Mn0.5O2: mitigating voltage and capacity fade by Mg substitution
- Abstract:
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Layered oxides for Na-ion batteries containing Fe have attracted strong interest mainly due to their low cost. However, full oxidation of Fe3+ to Fe4+ is rarely seen before O-redox sets in and is typically accompanied by voltage and capacity fade on cycling. On charging P2-Na0.67[Fe0.5Mn0.5]O2, Fe3+ is oxidized to only ≈Fe3.3+ before the onset of O-redox. O-redox occurs when the Na content is sufficiently low (Na ≈0.3) to permit the transition from P-type to O-type stacking, thus enabling Fe3...
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- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 2.0MB, Terms of use)
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- Publisher copy:
- 10.1002/aenm.202200702
Authors
Bibliographic Details
- Publisher:
- Wiley
- Journal:
- Advanced Energy Materials More from this journal
- Volume:
- 12
- Issue:
- 30
- Article number:
- 2200702
- Publication date:
- 2022-06-26
- Acceptance date:
- 2022-05-26
- DOI:
- EISSN:
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1614-6840
- ISSN:
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1614-6832
Item Description
- Language:
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English
- Keywords:
- Pubs id:
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1267703
- Local pid:
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pubs:1267703
- Deposit date:
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2022-08-22
Terms of use
- Copyright holder:
- Boivin et al.
- Copyright date:
- 2022
- Rights statement:
- © 2022 The Authors. Advanced Energy Materials published by Wiley-VCH GmbH This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
- Licence:
- CC Attribution (CC BY)
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