Comprehensive Review of P2-Type Na2/3Ni1/3Mn2/3O2, a Potential Cathode for Practical Application of Na-Ion Batteries

P2-type Na2/3Ni1/3Mn2/3O2 is a promising cathode material for practical applications in Na-ion batteries, due to its high energy density, high volumetric capacity, excellent Na ion conductivity, ease of synthesis, and good stability in air. Yet, it is subject to structural rearrangements on charging...

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Published inACS applied materials & interfaces Vol. 11; no. 25; pp. 22051 - 22066
Main Authors Zhang, Jiaolong, Wang, Wenhui, Wang, Wei, Wang, Shuwei, Li, Baohua
Format Journal Article
LanguageEnglish
Published American Chemical Society 26.06.2019
Subjects
air
batteries
cathodes
electrochemistry
energy density
sodium
P2-Na2/3Ni1/3Mn2/3O2
Na+/vacancy ordering
surface modification
structural transformation
cathode
cation substitution
Na-ion batteries
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Summary:P2-type Na2/3Ni1/3Mn2/3O2 is a promising cathode material for practical applications in Na-ion batteries, due to its high energy density, high volumetric capacity, excellent Na ion conductivity, ease of synthesis, and good stability in air. Yet, it is subject to structural rearrangements on charging to high voltage/low Na content and Na+/vacancy ordering transitions, which lead to poor reversibility and dramatic capacity decay upon cycling. In this Review, we present the latest advances related to Na2/3Ni1/3Mn2/3O2, with a main focus on strategies to stabilize the structural framework and improve the electrochemical properties. Practical issues and challenges are also proposed on the basis of current research status and progress.
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ISSN:1944-8244
1944-8252
1944-8252
DOI:10.1021/acsami.9b03937