Disordered Lithium-Rich Oxyfluoride as a Stable Host for Enhanced Li+ Intercalation Storage

A new intercalation compound Li2VO2F with disordered rock‐salt structure enables up to ≈1.8 Li+ storage (420 mAh g−1) at ≈2.5 V with a lattice volume change of only ≈3%. A high capacity of 300 mAh g−1 at 1C rate is observed. At –10 °C, Li2VO2F can deliver a reversible capacity of 280 mAh g−1 at ≈2.4...

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Bibliographic Details
Published in:Advanced energy materials 2015-05, Vol.5 (9), p.n/a
Main Authors: Chen, Ruiyong, Ren, Shuhua, Knapp, Michael, Wang, Di, Witter, Raiker, Fichtner, Maximilian, Hahn, Horst
Format: Article
Language:English
Subjects:
disordered rock-salt
intercalation cathodes
Li-ion batteries
Li2VO2F
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Summary:A new intercalation compound Li2VO2F with disordered rock‐salt structure enables up to ≈1.8 Li+ storage (420 mAh g−1) at ≈2.5 V with a lattice volume change of only ≈3%. A high capacity of 300 mAh g−1 at 1C rate is observed. At –10 °C, Li2VO2F can deliver a reversible capacity of 280 mAh g−1 at ≈2.4 V.
ISSN:1614-6832
1614-6840
DOI:10.1002/aenm.201401814