L&f Co., Ltd.

Hyundai Motor Company

Kia Corporation

Korea Advanced Institute of Science and Technology

Ji Woo Oh

Hoon Mo Park

Kyung Moon Lee

Sang Hoon Jeon

Sung Kyun Chang

Jung Joo Park

Jun Ho Shin

Doe Hyoung Kim

Hee Won Jung

Hye-Rim Bae

Chang Hyun Lee

Joong Myeon Bae

Seung Hyeon Choi

Disclosed are a secondary battery, an active material, a method for preparing the same, and a lithium secondary battery including the same. In an embodiment, provided is a secondary battery including a positive electrode, a negative electrode and an electrolyte, wherein the secondary battery further includes a reaction-inducing substance located in any one of the positive electrode, the negative electrode and the electrolyte, wherein the reaction-inducing substance forms a reaction product by consuming thermal energy when exposed to a predetermined temperature or higher in a use environment of the secondary battery, thereby improving thermal safety of the secondary battery.

Secondary battery and active material

Disclosed is a secondary battery including a positive electrode, a negative electrode and an electrolyte, wherein the secondary battery further includes a reaction-inducing substance located in any one of the positive electrode, the negative electrode and the electrolyte, wherein the reaction-inducing substance forms a reaction product when exposed to a predetermined temperature or higher in a use environment of the secondary battery, wherein the reaction product is a non-conductor.

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Daegu, South Korea

Ji Woo Oh