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Abstract
The defect specific technique of positron-electron annihilation is utilized in an appropriate electrochemical cell for operando monitoring of vacancy-type defect formation which occurs in battery electrodes upon charging, using the cathode material LiNi 1/3 Mn 1/3 Co 1/3 O 2 as a case study. The variation of the positron lifetime with charging-induced Li ion extraction indicates the formation of divacancies and vacancy agglomerates in a progressive amount as well as a reordering of vacancy agglomerates to one-dimensional vacancy chains at the end of charging. A remarkable correlation of the charging-induced variation of the positron lifetime with that of Li ion diffusion data in the literature has been found.
Originalsprache | englisch |
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Aufsatznummer | 013905 |
Fachzeitschrift | Applied Physics Letters |
Jahrgang | 114 |
Ausgabenummer | 1 |
DOIs | |
Publikationsstatus | Veröffentlicht - 2019 |
ASJC Scopus subject areas
- Physik und Astronomie (sonstige)
Fields of Expertise
- Advanced Materials Science
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Batteriematerialien: Struktur und Beladungsprozesse
Klinser, G. & Würschum, R.
1/01/13 → …
Projekt: Forschungsprojekt
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Energierelevante Materialien & Nanomaterialien
Brossmann, U., Steyskal, E., Würschum, R. & Klinser, G.
1/01/00 → …
Projekt: Arbeitsgebiet