Studies of the electrochemical behavior of LiNi0.80Co0.15Al0.05O2 electrodes coated with LiAlO2

Onit Srur-Lavi, Ville Mikkulainen, Boris Markovsky, Judith Grinblat, Michael Talianker, Yafit Fleger, Gili Cohen-Taguri, Albert Mor, Yosef Tal-Yosef, Doron Aurbach

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

In this paper, we studied the influence of LiAlO2 coatings of 0.5, 1 and 2 nm thickness prepared by Atomic Layer Deposition onto LiNi0.8Co0.15Al0.05O2 electrodes, on their electrochemical behavior at 30 and 60°C. It was demonstrated that upon cycling, 2 nm LiAlO2 coated electrodes displayed ∼3 times lower capacity fading and lower voltage hysteresis comparing to bare electrodes. We established a correlation among the thickness of the LiAlO2 coating and parameters of the self-discharge processes at 30 and 60°C. Significant results on the elevated temperature cycling and aging of bare and LiAlO2 coated electrodes at 4.3 V were obtained and analyzed for the first time. By analyzing of X-ray diffraction patterns of bare and 2 nm coated LiNi0.8Co0.15Al0.05O2 electrodes after cycling, we concluded that cycled materials preserved their original structure described by R-3m space group and no additional phases were detected.

Original languageEnglish
Pages (from-to)A3266-A3275
JournalJournal of the Electrochemical Society
Volume164
Issue number13
DOIs
StatePublished - 1 Jan 2017

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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