Studies of the Electrochemical Behavior of LiNi0.80Co0.15Al0.05O2 Electrodes Coated with LiAlO2

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

Research output: Contribution to journalArticleScientificpeer-review

21 Citations (Scopus)

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 degrees C. It was demonstrated that upon cycling, 2 nm LiAlO2 coated electrodes displayed similar to 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 degrees 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. (c) The Author(s) 2017. Published by ECS. All rights reserved.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume164
Issue number13
DOIs
Publication statusPublished - 2017
MoE publication typeA1 Journal article-refereed

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