Hyundai Motor Company

Kia Motors Corporation

Korea Electric Power Corporation

The Industry & Academic Cooperation in Chungnam National University (Iac)

The Industry & Academic Cooperation in Chungnam National University

Kyung Jin Lee

Yoon Sung Lee

Kyung Won Hahm

Seung Min Oh

Seung-Min Oh

Hyo Seok Kim

Yeolmae Yeo

Yeol Mae Yeo

Jung Je Woo

KiSeok Koh

Ki Seok Koh

Hyojin Kim

Sang Hoon Oh

Kwang Yong Choi

Disclosed is a lithium secondary battery provided with a separator, having improved thermal stability by including a micro-particle coating layer manufactured using Furan-based polymers, for example, polymers having polymer unit including furanyl or furoyl. The lithium secondary battery includes a cathode, an anode, an electrolyte, and a separator disposed between the cathode and the anode and including a coating layer including a micro-particle. The micro-particle includes the second polymer which may include cross-linked first polymer.

Lithium secondary battery and manufacturing method thereof

A damper for reinforcing earthquake resistance according to the present invention includes a first supporting part mounted in a building structure, a second supporting part mounted on a support structure movably disposed to be separated from the building structure, and disposed to face the first supporting part, and a damper part connecting the first supporting part with the second supporting part and absorbing energy generated by an earthquake.

Damper for reinforcing earthquake resistance

A lithium ion battery including a core-shell structured fire extinguishing particle is disclosed. When the battery is overheated to a predetermined temperature, a shell of the fire extinguishing particle coated on one surface or both surfaces of a porous separator is melted, a fire extinguishing material disposed in an inner space of the shell is released into an electrolytic solution of the battery, and as a result, it is possible to prevent the battery from being ignited or exploded even though the battery is overheated. Further, the melted shell clogs pores of the porous separator to block lithium ions from moving, such that the battery is blocked from being driven, thereby preventing the battery from being overheated any more.

Lithium ion battery including separator coated with fire extinguishing particle

The present invention relates to a seismic reinforcing device capable of conveniently conducting reinforcement of a structure, the device includes an upper support installed on an upper horizontal portion configured to connect columns, a lower support disposed under the upper horizontal portion, installed on a lower horizontal portion configured to connect the columns, and disposed in a diagonal direction with respect to the upper support, and a damper coupled to the upper support and the lower support and configured to absorb a shock.

Seismic reinforcing device

Growing community of inventors

Daejeon, South Korea

Kyung Jin Lee