Lg Chem, Ltd

Lg Chemical Ltd.

Kyoung-Won Kang

Hyang Mok Lee

Ki-Woong Kim

Soon-Ho Ahn

Jung Kyu Woo

Eun Ju Kang

Yi-Heon Jeong

Chan-Sub Lee

Provided is a secondary battery with improved safety through filling a polymer in a hardened state, and a method of manufacturing the same. The method of manufacturing a secondary battery according to the present disclosure includes preparing a polymer slurry by adding a polymer particle to an electrolyte solution, injecting the polymer slurry to a battery casing in which an electrode assembly is received, changing the polymer slurry to a polymer solution by heating the battery casing, and hardening the polymer solution by cooling the battery casing.

Secondary battery and method for manufacturing the same

Provided is a secondary battery electrolyte having improved high temperature properties and overcharge-prevention properties, particularly improved overcharge-prevention properties under high voltage/high current conditions, in conjunction with a minimized deterioration of the battery performance, by adding 3 to 5% by weight of cyclohexyl benzene (CHB) and 0.2 to 1.5% by weight of 2-fluoro biphenyl (2-FBP) as overcharge-preventing additives to an electrolyte of a lithium secondary battery.

Electrolyte of high temperature property and overcharge-prevention property and secondary battery employed with the same

Growing community of inventors

Daejeon, South Korea

Kyoung-Won Kang