Electrochemical performance of Na0.6[Li0.2Ni0.2Mn0.6]O2 cathodes with high-working average voltage for Na-ion batteries

Ezequiel De La Llave, Prasant Kumar Nayak, Elena Levi, Tirupathi Rao Penki, Shaul Bublil, Pascal Hartmann, Frederick Francois Chesneau, Miri Greenstein, Linda F. Nazar, Doron Aurbach

Research output: Contribution to journalArticlepeer-review

Abstract

Na0.6[Li0.2Ni0.2Mn0.6]O2 is synthesized by a self-combustion reaction (SCR) and studied for the first time as a cathode material for Na-ion batteries. The Na0.6[Li0.2Ni0.2Mn0.6]O2 cathode presents remarkable high rate capability and prolonged stability under galvanostatic cycling. A detailed analysis of X-ray diffraction (XRD) patterns at various states of cycling reveals that the excellent structural stability is due to a primarily solid-solution sodiation/desodiation mechanism of the material during cycling. Moreover, a meaningful comparison with Na0.6MnO2 and Na0.6[Li0.2Mn0.8]O2 reveals that the Na0.6[Li0.2Ni0.2Mn0.6]O2 cathode achieves a very high working-average voltage that outperforms most of the lithium-doped manganese-oxide cathodes published to date.

Original languageEnglish
Pages (from-to)5858-5864
Number of pages7
JournalJournal of Materials Chemistry A
Volume5
Issue number12
DOIs
StatePublished - 2017

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Renewable Energy, Sustainability and the Environment
  • General Materials Science

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