Synthesis and Electrochemical Study of New P3 Type Layered Na0.6Ni0.25Mn0.5Co0.25O2 for Sodium-Ion Batteries

Satyanarayana Maddukuri, Pralong Valerie, Varadaraju V. Upadhyayula

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13 Scopus citations


The room temperature stable P3 type Na0.6Ni0.25Mn0.5Co0.25O2 phase was studied as an interaction material for Na ion batteries. The phase was synthesized by mixed hydroxide co-precipitation method followed by heating at 750 °C in air. The phase purity was analyzed by means of Rietveld refinement using GSAS software. X-ray photoelectron spectroscopy (XPS) analysis showed that Co, and Mn are in oxidation states of 3+ and 4+, respectively, and Ni is in 2+ and 3+ oxidation states. The electrochemical properties of this layered material as a cathode delivered the reversible discharge capacity of 105 and 130 mAh/g at C/10 rate in the voltage window of 1.5-3.6 and 1.5-4.0 V vs. Na+/Na, respectively. The good capacity retention and nearly 99 % of coloumbic efficiency was observed. The Na insertion and de-insertion was occurred by reversible phase transitions as evidenced by ex-situ powder X-ray diffration. With increasing cutoff voltage to 4.4 V, the ex-situ powder X-ray diffration pattern indicated that the existence of P3 phase at high Na de-insertion.

Original languageEnglish
Pages (from-to)5660-5666
Number of pages7
Issue number20
StatePublished - 11 Jul 2017
Externally publishedYes

Bibliographical note

Funding Information:
The authors gratefully acknowledge the CNRS the LAFICS and IFCPAR (Indo-French Centre for the Promotion of Advanced Research/Centre Franco-Indien Pour la Promotion de la Recherche Avancée) through the project n°4608/2.

Publisher Copyright:
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim


  • Layered materials for battery
  • NaNiMnCoO
  • Sodium-Ion batteries


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