Lg Chem, Ltd

Lg Energy Solution, Ltd.

Jin-Young Shin

Su-Jin Yoon

Dong-Wook Sung

So-Mi Jeong

Young-Deok Kim

Je-An Lee

Dae-Sung Jang

Kyung-Ryun Ka

Sang-Joon Lee

Yeo-Ju Yoon

Seong-Jun Kim

Disclosed is a separator for an electrochemical device that includes a polymer substrate with small and uniform pores and an aqueous organic/inorganic composite porous coating layer and an adhesive coating layer and which is improved in compression resistance, and a method of making the separator and the electrochemical device including the separator. The separator with improved compression resistance is not easily deformed by well resisting pressure applied thereto during a lamination process in which an electrode and the separator are applied with heat and pressure so as to be bonded to each other. In addition, when pressure is applied, the coating layer serves as a buffer, thereby reducing the pressing force exerted on the porous substrate. Thus, deformation of the separator is inhibited.

Separator for electrochemical device having improved compression resistance, electrochemical device comprising same, and method for producing same

A separator for a lithium secondary battery. The separator for a lithium secondary battery is provided with a porous coating layer including small-particle diameter inorganic particles, large-particle diameter inorganic particles and adhesive polymer particles. The porous coating layer has a predetermined level of porosity. The separator has reinforced heat resistance, reduced resistance and improved peel strength to a porous polymer substrate.

Separator for lithium secondary battery and method for manufacturing the same

The present invention relates to a safety-improved battery cell including a thermal expansion tape and a method of manufacturing the same, wherein a battery pack including multiple battery cells is configured such that heat generated during a charging/discharging process and internal gas generated thereby are discharged to outside of a battery cell by employing a thermal expansion tape. Thus, the present invention can improve safety of a pouch-type secondary battery pack by discharging gas generated in a pouch-type secondary battery. In addition, the present invention utilizes pressure of gas generated in the secondary battery and thus can be operable without provision of a separate device and an external power source. Moreover, the present invention can perform repetitive gas discharge due to a configuration of a fixing unit having thermal expansion properties.

Lithium secondary battery pack including thermal expansion tape fixing pouch type battery cells and method of manufacturing same

The present disclosure relates to a composite separator for an electrochemical element and the electrochemical element including the same. More specifically, the present disclosure relates to a separator with excellent durability and improved formation of a bonding layer of a thin film and improved bonding force with an electrode, and a method for manufacturing the same. Further, the present disclosure pertains to an electrochemical element comprising the aforementioned separator.

Complex separator for electrochemical element, comprising bonding layer, and electrochemical element comprising same

Growing community of inventors

Daejeon, South Korea

Jin-Young Shin