公开(公告)号：US20160056438A1

公开(公告)日：2016-02-25

申请号：US14840875

申请日：2015-08-31

Applicant: LG CHEM, LTD.

Inventor： Jong-Hun KIM ,  Sang-Young LEE ,  Pil-Kyu PARK ,  Jang-Hyuk HONG ,  Byoung-Jin SHIN ,  In-Chul KIM

IPC: H01M2/16 ,  H01M10/0583 ,  H01M10/0525 ,  H01M2/14

CPC classification number: H01M2/1686 ,  H01M2/145 ,  H01M2/1653 ,  H01M2/166 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0583

Abstract: A separator includes a porous substrate having a plurality of pores; and a porous coating layer formed on at least one surface of the porous substrate and made of a mixture of a binder and a plurality of inorganic particles, wherein the binder includes a crosslinked binder. This separator may improve high temperature cycle performance, discharge characteristics and thermal resistance of an electrochemical device since the separator exhibits improved insolubility and impregnation to electrolyte and improved thermal resistance.

Abstract translation: 分离器包括具有多个孔的多孔基材; 以及形成在所述多孔基材的至少一个表面上并由粘合剂和多种无机颗粒的混合物制成的多孔涂层，其中所述粘合剂包括交联粘合剂。 该分离器可以改善电化学装置的高温循环性能，放电特性和耐热性，因为隔膜表现出改善的不溶性和浸渍到电解质和改善的耐热性。

公开(公告)号：US20150162587A1

公开(公告)日：2015-06-11

申请号：US14622303

申请日：2015-02-13

Applicant: LG CHEM, LTD.

Inventor： Su-Jin YOON ,  Pil-Kyu PARK ,  Jong-Hun KIM ,  Jin-Nyoung YOO ,  In-Chul KIM ,  Sang-Young LEE

IPC: H01M2/16 ,  H01M2/14 ,  H01M10/0525

CPC classification number: H01M2/1686 ,  H01M2/145 ,  H01M2/1613 ,  H01M2/162 ,  H01M2/1646 ,  H01M2/1653 ,  H01M2/166 ,  H01M2/1666 ,  H01M10/052 ,  H01M10/0525 ,  Y02E60/122 ,  Y02P70/54

Abstract: A separator includes a non-woven fabric substrate having pores, fine thermoplastic powder located inside the pores of the non-woven fabric substrate, and a porous coating layer disposed on at least one surface of the non-woven fabric substrate. The fine thermoplastic powder has an average diameter smaller than that of the pores and a melting point lower than the melting or decomposition point of the non-woven fabric substrate. The porous coating layer includes a mixture of inorganic particles and a binder polymer whose melting point is higher than the melting or decomposition point of the fine thermoplastic powder. In the porous coating layer, the inorganic particles are fixedly connected to each other by the binder polymer and the pores are formed by interstitial volumes between the inorganic particles. Previous filling of the large pores of the non-woven fabric substrate with the fine thermoplastic powder makes the porous coating layer uniform.

Abstract translation: 隔膜包括具有孔的无纺布基材，位于无纺布基材的孔内的精细热塑性粉末，以及设置在无纺布基材的至少一个表面上的多孔涂层。 细的热塑性粉末的平均直径小于孔的直径，熔点低于无纺布基材的熔点或分解点。 多孔涂层包括无机颗粒和熔点高于细的热塑性粉末的熔点或分解点的粘合剂聚合物的混合物。 在多孔涂层中，无机颗粒通过粘合剂聚合物彼此固定连接，并且通过无机颗粒之间的间隙体积形成孔。 先前用细小的热塑性粉末填充无纺布基材的大孔，使多孔涂层均匀。