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Delocalised electron-holes on oxygen in a battery cathode

Abstract:

Oxide ions in transition metal oxide cathodes can store charge at high voltage offering a route towards higher energy density batteries. However, upon charging these cathodes, the oxidized oxide ions condense to form molecular O2 trapped in the material. Consequently, the discharge voltage is much lower than charge, leading to undesirable voltage hysteresis. Here we capture the nature of the electron holes on O2− before O2 formation by exploiting the suppressed transition metal rearrangement ...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1038/s41560-023-01211-0

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Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Oxford college:
Linacre College
Role:
Author
ORCID:
0000-0002-7415-477X
Publisher:
Springer Nature Publisher's website
Journal:
Nature Energy Journal website
Publication date:
2023-02-16
Acceptance date:
2023-01-20
DOI:
EISSN:
2058-7546
Language:
English
Keywords:
Pubs id:
1324717
Local pid:
pubs:1324717
Deposit date:
2023-01-21

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