NON-AQUEOUS, HIGH CAPACITY CATHODE MATERIAL FOR LITHIUM SECONDARY BATTERY, AND METHOD FOR PREPARING SAME

The present invention relates to a non-aqueous cathode material for lithium secondary batteries using a spherical transition metal complex carbonate, and a method for preparing same. The present invention is for ensuring outstanding life expectancy, while allowing a high capacity of 250 mAh/g or mor...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: WOO, Sanggil, LEE, Kyungjun, KIM, Jeomsoo, CHO, Woosuk, PARK, Yeonggwang, YIM, Taeeun, SONG, Junho, KIM, Youngjun
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The present invention relates to a non-aqueous cathode material for lithium secondary batteries using a spherical transition metal complex carbonate, and a method for preparing same. The present invention is for ensuring outstanding life expectancy, while allowing a high capacity of 250 mAh/g or more to be implemented by coating the surface of the spherical transition metal complex carbonate with a nano-sized metal oxide to improve the structural stability of the final cathode material. According to the present invention, since the surface of a spherical transition metal complex carbonate, which is prepared by using a cobalt material, nickel material, manganese material, carboxyl group material, and ammonia material, is coated with titanium dioxide, it is possible to prepare a spherical transition metal complex carbonate having a surface coated with a transition metal oxide having a particle size of 5-25 µm and a composition ratio represented by the chemical formula: Ni x Co y Mn 1-x-y Ti z CO 3 (0.0