Umicore

Rajalakshmi Senthil Arumugam

Jens M Paulsen

Jeffrey R Dahn

Xin Xia

Jing Zhang

A rechargeable lithium ion battery including: a positive electrode including coated particles, wherein each particle includes a core and a coating disposed thereon, wherein the core consists of Li, M, and O, and the coating includes Li, M, O, and AI2O3; wherein: M is (Ni(NiMn)Co)A; 0.15&#x2264;z&#x2264;0.50; 0.17&#x2264;x&#x2264;0.30; 0.35&#x2264;y&#x2264;0.75; 0&#x3c;k&#x3c;0.1; x+y+z=1; and A includes Al and optionally at least one additional metal dopant selected from Mg, Zr, W, Ti, Cr, V, Nb, B, and Ca, and combinations thereof; and wherein the Li and M are present in the core in a molar ratio of Li to M of at least 0.95 and no greater than 1.10; a negative electrode; and a nonaqueous liquid electrolyte including: a lithium salt; a nonaqueous solvent; and an additive mixture including: prop-1-ene-1,3-sultone; at least one compound selected from tris(trimethylsilyl)phosphite, tris(trimethylsilyl)phosphate, tri-allyl phosphate, and combinations thereof; and at least one compound selected from methylene methanedisulfonate, 1,3,2-dioxathiolane-2,2-dioxide, and combinations thereof.

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Halifax, Canada

Rajalakshmi Senthil Arumugam