Patent ID: 11942638
Assignee: CITY UNIVERSITY OF HONG KONG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 11:
12. A nickel-rich lithium ion battery cathode material formed by the method of claim 1 having a composition of LiNixM1-xO2, where 0.6<x<0.9, and where M is one or more metals selected from the group consisting of Co, Mn, Fe, Ti, Zr, V, and Cr, the cathode material having a microstructure comprising primary particles with secondary particles formed on the surfaces of the primary particles, the primary particles having manipulated primary grain interfaces with nickel ions on surfaces of the primary particles being oxidized from a 2+ to a 3+ state, the secondary particles formed on the surfaces of the primary particles have a diameter of approximately 5-20 nm, the secondary particles including a three-dimensional monoclinic grain boundary network spread over a surface of the primary particles.