In Operando XRD and TXM Study on the Metastable Structure Change of NaNi1/3Fe1/3Mn1/3O2 under Electrochemical Sodium-Ion Intercalation

In operando XRD and TXM‐XANES approaches demonstrate that structure evolution in NaNi1/3Fe1/3Mn1/3O2 during cycling follows a continuous change, and the formation of a nonequilibrium solid solution phase in the existence of two phases. An O3′ and P3′ monoclinic phase occur, and redox couples of Ni3+...

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Bibliographic Details
Published in:Advanced energy materials 2016-12, Vol.6 (24), p.n/a
Main Authors: Xie, Yingying, Wang, Hong, Xu, Guiliang, Wang, Jiajun, Sheng, Huaping, Chen, Zonghai, Ren, Yang, Sun, Cheng-Jun, Wen, Jianguo, Wang, Jun, Miller, Dean J., Lu, Jun, Amine, Khalil, Ma, Zi-Feng
Format: Article
Language:English
Subjects:
MATERIALS SCIENCE
NaNi1/3Fe1/3Mn1/3O2
reaction mechanism
sodium-ion batteries
structure changes
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Summary:In operando XRD and TXM‐XANES approaches demonstrate that structure evolution in NaNi1/3Fe1/3Mn1/3O2 during cycling follows a continuous change, and the formation of a nonequilibrium solid solution phase in the existence of two phases. An O3′ and P3′ monoclinic phase occur, and redox couples of Ni3+/Ni4+ and Fe3+/Fe4+ are mainly responsible in the charge voltage range from 4.0 to 4.3 V.
ISSN:1614-6832
1614-6840
DOI:10.1002/aenm.201601306