Patent ID: 11909043
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A positive electrode for an all-solid secondary battery including a sulfide-based solid electrolyte, the positive electrode comprising:
a first positive active material having an average particle diameter of about 15 μm to about 20 μm,
a second positive active material having an average particle diameter of about 2 μm to about 6 μm, and
a solid electrolyte,
wherein at least one selected from the first positive active material and the second positive active material comprises a coating layer, the coating layer comprising a lithium ion conductor,
wherein each of the first positive active material and the second positive active material comprises a core and a shell,
wherein the shell of the first positive active material or the second positive active material comprises a nickel-based active material comprising cobalt (Co), and
wherein an amount of the nickel-based active material in the shell is about 0.1 parts to about 10 parts by weight based on 100 parts by weight of a total weight of the nickel-based active material of the corresponding core and the nickel-based active material of the corresponding shell.