1. A rechargeable lithium ion battery comprising an anode, a cathode and an electrolyte, said anode comprising lithium nickel manganese cobalt oxide powder having particles comprising a core and a surface layer, said core comprising a layered Wherein M has a formula M = (Ni z (Ni ½ Mn ½ ) y Co x ) 1-k A k , wherein 0.13 ≤ x ≤0.30, 0.20 ≤ z ≤ 0.55, x + y + z = 1 and 0 k? 0.1, A is at least one dopant and Al, and the lithium nickel manganese cobalt oxide powder has a molar ratio of 0.95? Li: M? 1.10, O and alumina, wherein the electrolyte comprises lithium difluorophosphate as an additive.
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机译：1.一种可再充电锂离子电池，包括阳极，阴极和电解质，所述阳极包括锂镍锰钴氧化物粉末，所述锂镍锰钴氧化物粉末具有包括核和表面层的颗粒，所述核包括层状，其中M具有式M ＝（Ni z （Ni ½ Mn ½） y Co x ） 1 -k A k ，其中0.13≤x ≤0.30，0.20≤z≤0.55，x + y + z = 1且0 展开▼
