Synthesis, Structure, and Electrochemical Properties of the Layered Sodium Insertion Cathode Material: NaNi1/3Mn1/3Co1/3O2
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
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| Title |
Synthesis, Structure, and Electrochemical Properties of the Layered
Sodium Insertion Cathode Material: NaNi1/3Mn1/3Co1/3O2
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| Creator |
Sathiya, M.
Hemalatha, K. Ramesha, K. Tarascon, J.M. Prakash, A.S. |
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| Subject |
Electrochemical Power Sources
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| Description |
A layered phase, NaNi1/3Mn1/3Co1/3O2 (NaNMC), isostructural
to NaCoO2 has been synthesized. Stoichiometric NaNMC crystallizes in a
rhombohedral R3̅m space group where Na is in an octahedral environment
(O3-Type). Galvanostatic cycling on NaNMC vs Na cell indicated
a reversible intercalation of 0.5 Na, leading to a capacity of 120 mAh·g−1 in
the voltage range of 2−3.75 V and indicating its possible application in Naion
batteries. The electrochemically driven Na insertion/deinsertion in
NaNMC is associated with several phase transitions and solid solution
regimes which are studied by in situ X-ray diffraction. Sodium deinsertion in
NaxNMC resulted in sequential phase transitions composed of biphasic and
monophasic domains. The composition driven structural evolution in
NaxNMC follows the sequence O3 ⇒ O1 ⇒ P3 ⇒ P1 phases with an
increased ‘c’ parameter, while the ‘a’ parameter remains almost unchanged.
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| Publisher |
American Chemical Society
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| Date |
2012
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/3101/1/050-2012.pdf
Sathiya, M. and Hemalatha, K. and Ramesha, K. and Tarascon, J.M. and Prakash, A.S. (2012) Synthesis, Structure, and Electrochemical Properties of the Layered Sodium Insertion Cathode Material: NaNi1/3Mn1/3Co1/3O2. Chemistry of Materials, 24. pp. 1846-1853. ISSN 0897-4756 |
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| Relation |
http://www.pubs.acs.org/cm
http://cecri.csircentral.net/3101/ |
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