CPC H01M 4/525 (2013.01) [C01G 53/006 (2013.01); H01M 4/366 (2013.01); H01M 4/505 (2013.01); H01M 10/0525 (2013.01); C01P 2004/50 (2013.01); H01M 2004/028 (2013.01)] | 16 Claims |
1. A nickel-based active material precursor for a lithium secondary battery, the nickel-based active material precursor comprising:
a secondary particle comprising a plurality of particulate structures connected in a single structure, each particulate structure of the plurality of particulate structures having a radial center,
wherein each particulate structure is an agglomerate of a plurality of primary particles, and
wherein each particulate structure comprises a porous core portion and a shell portion, the shell portion comprising primary particles radially arranged on the porous core portion, and the porous core portion having a higher porosity than the shell portion.
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