Shenzhen Bak Battery Co., Ltd.

Qiming Pan

Wei He

Ming He

Bin Xiao

Xin Teng

Ruyu Rao

Provided are a positive electrode material for lithium ion batteries and a process for preparing the same. The positive electrode material for lithium ion batteries comprises a composite positive electrode material consists of LiCoOand an auxiliary positive electrode material, the general formula of the auxiliary positive electrode material is LiCoNiMnO, wherein 0&#x3c;x&#x3c;0.9, 0&#x3c;y&#x3c;0.9, 0&#x3c;x+y&#x3c;0.9, and the LiCoOis a modified LiCoOcoated with an AlOfilm. The overcharge performance of the batteries can be significantly increased and the use amount of the overcharge additive can be reduced by using the positive electrode material so as to its improve the cycle performance of the batteries and improve the anti-overcharge safety in the special applications and the charging conditions.

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Guangdong, China

Qiming Pan