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发明公开
CN101710614A 介孔纳米粒子改性锂电池隔膜 失效 - 权利终止

介孔纳米粒子改性锂电池隔膜
摘要：
本发明公开了一种介孔纳米粒子改性锂电池隔膜，该隔膜包括重量百分比为80～95％的聚烯烃基体膜，2.5～15％的介孔纳米粒子，0.025～5％的β晶型成核剂。其内部包含三类孔，一是聚烯烃基体薄膜在拉伸过程中形成的纳米微孔；二是由介孔纳米粒子相互堆积形成的纳米堆积孔；三是介孔纳米粒子自身通过有机-无机界面间的定向作用组装而成的纳米微孔。本发明的介孔纳米粒子改性锂电池隔膜具有孔隙率高，耐蚀性强，拉伸强度高和热稳定性好等优点。
摘要（英）：

The invention discloses a diaphragm of a modified lithium battery with medium hole nano particles. The diaphragm comprises the following components by weight percent: 80-95% of polyolefine matrix film, 2.5-15% of medium hole nano particles and 0.025-5% of beta crystal type nucleating agent. The inside of the diaphragm contains the following three classes of holes: (1) nano micropores formed by the polyolefine matrix film in a stretching process; (2) nano stacking holes formed by stacking the medium hole nano particles mutually; and (3) nano micropores formed by assembling the medium hole nano particles by a directional action between organic-inorganic interfaces. The diaphragm of the modified lithium battery with the medium hole nano particles has the advantages of high porosity, strong corrosion resistance, high tensile strength, good thermal stability and the like.

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