Ningde Amperex Technology Limited

Tao Li

Meng Wang

Pengwei Chen

Kai Wang

The present application relates to a cathode material and an electrochemical device comprising the same. In particular, the present application relates to a cathode material having a surface heterophasic structure, wherein the cathode material includes a lithium cobalt oxide and an oxide of cobalt, wherein a Raman spectrum of the cathode material has characteristic peaks in the range of about 470 cmto about 530 cm, about 560 cmto about 630 cmand about 650 cmto about 750 cm, and wherein the surface heterophasic structure of the cathode material includes the lithium cobalt oxide and the oxide of cobalt. The electrochemical device using the cathode material having a surface heterophasic structure of the present application can exhibit excellent cycle performance and thermal stability.

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Ningde, China

Tao Li