公开(公告)号：US20160049627A1

公开(公告)日：2016-02-18

申请号：US14762716

申请日：2013-01-23

Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY

Inventor： Jian HU ,  Jin LONG ,  Xiwen WANG

IPC: H01M2/16 ,  D21H21/16 ,  D21H25/14 ,  D21H27/38 ,  D21H25/02

CPC classification number: H01M2/1686 ,  D21H21/16 ,  D21H25/02 ,  D21H25/14 ,  D21H27/38 ,  H01M2/145 ,  H01M2/162 ,  H01M2/1626

Abstract: Diaphragm paper, and a preparation method and an application thereof. The diaphragm paper comprises a first layer, a second layer, and a third layer, wherein the second layer is located between the first layer and the third layer; the first layer and the third layer are loose layers, of which the average aperture is larger than 10 μm and the basis weight is 5 to 30 g/m2; and the second layer is a compact layer, of which the average aperture is smaller than 5 μm and the basis weight is 2 to 15 g/m2. The compact layer has small aperture and good insulating performance, and is capable of effectively insulating a positive electrode and a negative electrode. The loose layers have good liquid permeability and electrolyte absorptivity, and can guarantee the discharge performance of a battery. The material is further advantageous in having good dimensional stability and being thin, so that a battery can achieve high capacity.

Abstract translation: 隔膜纸及其制备方法及其应用。 隔膜纸包括第一层，第二层和第三层，其中第二层位于第一层和第三层之间; 第一层和第三层是松散层，其平均孔径大于10μm，基重为5至30g / m 2; 第二层是致密层，平均孔径小于5μm，基重为2〜15g / m 2。 紧凑层具有小孔径和良好的绝缘性能，并且能够有效地绝缘正极和负极。 松散层具有良好的液体渗透性和电解质吸收性，并且可以保证电池的放电性能。 该材料具有良好的尺寸稳定性和较薄的优点，使得电池可实现高容量。