Industry-University Cooperation Foundation Hanyang University

Myung Hoon Kim

Yang Kook Sun

Shin Ho Suk

Disclosed herein are double-layer cathode active materials comprising a nickel-based cathode active material as an inner layer material and a transition metal mixture-based cathode active material as an outer layer material facing an electrolyte. Since the nickel-based cathode active material as an inner layer material has high-capacity characteristics and the transition metal mixture-based cathode active material as an outer layer material facing an electrolyte has superior thermal safety, the double-layer cathode active materials have high capacity, high charge density, improved cycle characteristics and superior thermal safety.

Double-layer cathode active materials for lithium secondary batteries, method for preparing the active materials, and lithium secondary batteries using the active materials

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Jeonrabukdo, South Korea

Myung Hoon Kim