COMPOSITE POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION BATTERY, MANUFACTURING METHOD THEREOF, AND LITHIUM ION BATTERY INCLUDING POSITIVE ELECTRODE INCLUDING THE SAME

To provide a composite positive electrode active material for a lithium ion battery in which the content of residual lithium is reduced, and a manufacturing method thereof.SOLUTION: A composite positive electrode active material for a lithium ion battery includes a nickel-rich lithium nickel-based c...

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Hauptverfasser:	KWON SEON YOUNG, KIM KI HYEON, CHO KWANG HWAN, LEE JAE HO, SONG YU MI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F ELECTRICITY INORGANIC CHEMISTRY METALLURGY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Zusammenfassung:	To provide a composite positive electrode active material for a lithium ion battery in which the content of residual lithium is reduced, and a manufacturing method thereof.SOLUTION: A composite positive electrode active material for a lithium ion battery includes a nickel-rich lithium nickel-based compound with a nickel content of 50 mol% to 100 mol% based on the total amount of transition metals, and a coating film containing a rare earth metal hydroxide, which is placed on the surface of the nickel-rich lithium nickel-based compound, and there are also provided a manufacturing method thereof, and a lithium ion battery including a positive electrode including the same.SELECTED DRAWING: Figure 2A 【課題】残留リチウムの含量が低減されたリチウムイオン電池用複合正極活物質及びその製造方法を提供するものである。【解決手段】ニッケル含量が遷移金属総量を基準に、５０モル％ないし１００モル％であるニッケルリッチリチウムニッケル系化合物と、ニッケルリッチリチウムニッケル系化合物の表面に配置された、希土類金属ヒドロキシドを含むコーティング膜と、を含むリチウムイオン電池用複合正極活物質、その製造方法、及びそれを含む正極を含むリチウムイオン電池である。【選択図】図２Ａ