Secondary Battery and Preparation Method Thereof

Organization Name

lg energy solution, ltd.

Inventor(s)

Ji Hoon Ryu of Daejeon (KR)

Je Young Kim of Daejeon (KR)

Dong Kyu Kim of Daejeon (KR)

Yeo Min Yoon of Daejeon (KR)

Seong Won Choi of Daejeon (KR)

Won Kyung Shin of Daejeon (KR)

Tae Seob Lim of Daejeon (KR)

Secondary Battery and Preparation Method Thereof

This abstract first appeared for US patent application 20250087833 titled 'Secondary Battery and Preparation Method Thereof

Original Abstract Submitted

a secondary battery including an electrode assembly, a gel polymer electrolyte, and a battery case accommodating the electrode assembly and the gel polymer electrolyte. the electrode assembly includes a plurality of electrodes and a plurality of separators, the plurality of electrodes are stacked in a vertical direction, and each of the plurality of separators is disposed between the stacked electrodes. the separator includes a porous substrate and a ceramic coating layer disposed on both sides of the porous substrate, and the ceramic coating layer contains inorganic particles and a binder, wherein the inorganic particles are included in an amount ranging from 92 wt % to less than 100 wt %, and the binder is included in an amount ranging from greater than 0 wt % to 8 wt %. the method of making the battery is also provided.