Patent ID: 6881520

Claim:
A particular cathodic material for use in a rechargeable lithium electrochemical cell wherein each particle comprises: a lithiated transition metal oxide core functional as an intercalation cathode consisting of lithium nickel dioxide or lithium nickel cobalt dioxide having the formula LiNi 1-y Co y O 2 wherein y>0, or a mixture thereof, and a lithium ion conductor coated on each particle of said core said conductor having electron conductive properties and being functional to stabilize said core to thereby impart predetermined electrochemical properties to said cathodic material, wherein said lithium ion conductor is LiCo x Ni 1-x O 2 having a thickness between about 0.5 nm and about 5000 nm, and wherein x>y+0.1 for y<0.9, and x>0.1 for lithium nickel dioxide as a core.