On the performance of LiNi1/3Mn1/3Co 1/3O2 nanoparticles as a cathode material for lithium-ion batteries

Hadar Sclar, Daniela Kovacheva, Ekaterina Zhecheva, Radostina Stoyanova, Ronit Lavi, Giora Kimmel, Judith Grinblat, Olga Girshevitz, Francis Amalraj, Ortal Haik, Ella Zinigrad, Boris Markovsky, Doron Aurbach

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67 Scopus citations

Abstract

We report on the behavior of nanometric LiMn1/3Ni1/3 Co1/3O2 (LiMNC) as a cathode material for Li-ion batteries in comparison with the same material with submicrometric particles. The LiMNC material was produced by a self-combustion reaction, and the particle size was controlled by the temperature and duration of the follow-up calcination step. X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared, Raman spectroscopy, electron paramagnetic resonance, inductively coupled plasma, and atomic force microscopy were used in conjunction with standard electrochemical techniques (cyclic voltammetry, chronopotentiometry, and electrochemical impedance spectroscopy) for characterizing the electrode materials. The effect of cycling and aging at 60°C was also explored. Nanomaterials are much more reactive in standard electrolyte solutions than LiMNC with a submicrometric particle. They develop surface films that impede their electrochemical response, while their bulk structure remains stable during aging and cycling at elevated temperatures. The use of nanomaterials in Li-ion batteries is discussed.

Original languageEnglish
Pages (from-to)A938-A948
JournalJournal of the Electrochemical Society
Volume156
Issue number11
DOIs
StatePublished - 2009

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