Celgard Inc.

Premanand Ramadass

Lie Shi

Zhengming Zhang

Xiaomin Zhang

Paul M Halmo

Xuefa Li

Ronald W Call

Xiangyun Wei

Shizuo Ogura

A ceramic-coated battery separator having a microporous polyolefin membrane and a ceramic coating on at least one surface of the microporous polyolefin membrane, wherein the ceramic-coated separator exhibits a strain shrinkage of 0% at temperatures greater than or equal to 120 degrees Celsius is provided.

Battery separator including microporous polyolefin membrane with ceramic coating

A battery separator for a secondary lithium battery includes a microporous/porous membrane with a ceramic coating of one or more layers, a layer may include one or more particles having an average particle size ranging from 0.01 &#x3bc;m to 5 &#x3bc;m and/or binders that include poly (sodium acrylate-acrylamide-acrylonitrile) copolymer.

Separator membranes for lithium ion batteries and related methods

A multi-layer microporous battery separator which comprises: a high molecular weight polypropylene layer having a melt flow index of &#x2266;1.2 measured at layer; a polyethylene layer; and a high molecular weight polypropylene layer having a melt flow index of &#x2266;1.2 measured at layer. The resulting microporous battery separator which is formed by a dry stretch process produces the microporous battery separator which has a porosity of &#x2266;37% while maintaining a gurley from 13-25 seconds and a thickness of &#x2266;25 microns.

Multilayer separator exhibiting improved strength and stability

Growing community of inventors

Charlotte, NC, United States of America

Premanand Ramadass