Peking University

Dingguo Xia

Jin Bo Ma

Biao Li

Jin Ma

The present application discloses boron-doped lithium rich manganese based materials for cathodes of lithium ion batteries. The disclosed cathode materials can be prepared by co-precipitation and sol-gel methods. The chemical formula of this cathode material is Li[LiMnCoNiB]O(a+b+c+d+x=1, a, b, x&#x3e;0, c&#x2267;0, d&#x2267;0, c+d&#x3e;0). Lithium ion batteries using these cathode materials show impressive improvements in performance and increased tap density at low level of boron doping. The co-precipitation method is particularly suitable for large-scale industrial production. The sol-gel method is simple and can produce fine and uniform particles.

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Beijing, China

Dingguo Xia