McDermott Will & Emery LLP
Lithium ion secondary battery
A positive electrode active material for a lithium ion secondary battery is a lithium-containing composite oxide represented by the chemical formula: Lia(Co1-x-yMgxAly)bMzOc, where M is at least one element selected from the group consisting of Na and K, and the values a, b, c, x, y and z respectively satisfy 0≦a≦1.05, 0.005≦x≦0.15, 0.0001≦y≦0.01, 0.0002≦z≦0.008, 0.85≦b≦1.1 and 1.8≦c≦2.1.This makes it possible to improve a high temperature storage characteristics and safety of the lithium ion secondary battery.
Panasonic Corporation
C H C H C H C Y H C H Y H H H H
C01G H01M C01G H01M C01P H01M C01P Y02P H01M C01P H01M Y02E H01M H01M H01M H01M
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Masaya Yosuke Ryoichi Hideyasu Shoichiro
Okochi Kita Tanaka Takatsuji Watanabe