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Studies of Nanosized LiNi[sub 0.5]Mn[sub 0.5]O[sub 2]-Layered Compounds Produced by Self-Combustion Reaction as Cathodes for Lithium-Ion Batteries

2006; Electrochemical Society; Volume: 9; Issue: 10 Linguagem: Inglês

10.1149/1.2221765

1944-8775

Boris Markovsky, Daniela Kovacheva, Yosef Talyosef, Mila Gorova, Judith Grinblat, Doron Aurbach,

Extraction and Separation Processes

We report here on the synthesis of layered nanosized compound by a modified self-combustion reaction and the studies of its electrochemical behavior as a cathode material for Li cells. Capacities up to could be reached during cycling of these electrodes even at in /alkyl-carbonate solutions. The nano- material exhibits remarkable stability during prolonged aging and cycling at elevated temperatures. Surface films developed on the nano- particles in the course of cycling/aging contain polycarbonates, , nickel and manganese oxides, and fluorides, and lead to efficient passivation and stabilization of the electrodes.