Svolt Energy Technology Company Limited

Qiqi Qiao

Pengfei Wang

Hongxin Yang

Weijun Jiang

Xinpei Xu

Sixian Chen

Zetao Shi

Jiali Ma

Mingzhu Sun

Provided are a lithium nickel manganese oxide composite material, a preparation method thereof and a lithium ion battery. The preparation method includes: a first calcining process is performed on a nano-oxide and a nickel-manganese precursor, to obtain an oxide-coated nickel-manganese precursor; and a second calcining process is performed on the precursor and a lithium source material, to obtain the lithium nickel manganese oxide, and a temperature of the first calcining process is lower than the second calcining process. A a lower temperature, the nano-oxide may be melted, a denser nano-oxide coating layer is formed on the surface of the precursor, so the oxide-coated nickel-manganese precursor is obtained. At a higher temperature, the nano-oxide, a nickel-manganese material and a lithium element may be more deeply combined. A problem that the nano-oxide layer is easy to fall off is solved, and cycle performance of the lithium nickel manganese oxide is greatly improved.

Lithium nickel manganese oxide composite material, preparation method thereof and lithium ion battery

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Jiangsu, China

Qiqi Qiao