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Electrochemical utilization of iron IV in the Li 1.3 Fe 0.4 Nb 0.3 O 2 disordered rocksalt cathode
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Lebens‐Higgins, Zachary, Chung, Hyeseung, Temprano, Israel, Zuba, Mateusz, Wu, Jinpeng, Rana, Jatinkumar, Mejia, Carlos, Jones, Michael A., Wang, Le, Grey, Clare P., Du, Yingge, Yang, Wanli, Meng, Ying Shirley and Piper, Louis F. J. (2021) Electrochemical utilization of iron IV in the Li 1.3 Fe 0.4 Nb 0.3 O 2 disordered rocksalt cathode. Batteries & Supercaps, 4 (5). pp. 771-777. doi:10.1002/batt.202000318
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Official URL: http://dx.doi.org/10.1002/batt.202000318
Abstract
Degradation threshold: For the Li-excess Li1.3Fe0.4Nb0.3O2 disordered rocksalt cathode, the high capacity is identified to result from iron redox to 4+ and cathode degradation. Iron redox accounts for the capacity on continued cycling and there is no reversible lattice oxygen redox. By limiting the upper cutoff voltage to avoid cathode degradation, the capacity retention is greatly improved associated with reversible utilization of iron redox.
Item Type: | Journal Item | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
Journal or Publication Title: | Batteries & Supercaps | ||||||||
Publisher: | Wiley | ||||||||
ISSN: | 2566-6223 | ||||||||
Official Date: | May 2021 | ||||||||
Dates: |
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Volume: | 4 | ||||||||
Number: | 5 | ||||||||
Page Range: | pp. 771-777 | ||||||||
DOI: | 10.1002/batt.202000318 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access |
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