Positive Electrode Material for Lithium Seconday Battery, and Positive Electrode for Lithium Secondary Battery and Lithium Secondary Battery Including the Same

Positive Electrode Material for Lithium Seconday Battery, and Positive Electrode for Lithium Secondary Battery and Lithium Secondary Battery Including the Same

A positive electrode material for a lithium secondary battery includes a first positive electrode active material and a second positive electrode active material, both of which are lithium composite transition metal oxides containing transition metals. The first positive electrode active material ha...

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Bibliographische Detailangaben
Hauptverfasser: Park, Sung Bin, Kim, Dong Hwi, Lee, Dong Hun, Han, Gi Beom, Jung, Wang Mo
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Zusammenfassung:A positive electrode material for a lithium secondary battery includes a first positive electrode active material and a second positive electrode active material, both of which are lithium composite transition metal oxides containing transition metals. The first positive electrode active material has a larger average particle size (D50) than the second positive electrode active material, wherein a ratio (Li/Me)1 of the mole number of lithium with respect to the total mole number of transition metals of the first positive electrode active material is more than 1 to 1.5 or less, and a ratio (Li/Me)2 of the mole number of lithium (Li) with respect to the total mole number of transition metals of the second positive electrode active material is 0.9 to 1. The second positive electrode active material has a crystallite size of 180 nm or more.