| abstract |
An object of the present invention is to provide a good lithium metal oxide and a method for forming the same. A method for forming a lithium metal oxide composed of Ni, Mn, and Co useful for making a lithium ion battery is disclosed in which a specific size allows for improved lithium metal oxide formation. And providing Ni and Co precursor microparticles of The method allows for the formation of lithium metal oxides with improved safety while maintaining good capacity and rate performance. In particular, the method allows for the formation of lithium metal oxides where the surface Mn / Ni ratio of the primary particles is greater than the bulk Mn / Ni ratio. Similarly, the method allows for the formation of lithium metal oxides containing secondary particles having a fairly high density that allows for high cathode density and cell capacity, while maintaining good capacity and rate performance. [Selection diagram] Fig. 1 |