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公开(公告)号:WO2010069189A1
公开(公告)日:2010-06-24
申请号:PCT/CN2009/073955
申请日:2009-09-16
CPC classification number: H01M2/1653 , C08J5/2287 , C08J2323/02 , H01G9/02 , H01G9/155 , H01M2/166 , H01M2/1686 , Y02E60/12 , Y02E60/13
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公开(公告)号:WO2009079946A1
公开(公告)日:2009-07-02
申请号:PCT/CN2008/072889
申请日:2008-10-31
CPC classification number: H01M2/1653 , C08J5/2231 , C08J2333/08 , H01M10/0525 , H01M10/056 , H01M10/0565 , H01M2300/0082
Abstract: Provided are separators used in power accumulators such as lithium ion secondary batteries and a preparation method thereof. The said separators are obtained through following steps: providing a polymer colloidal emulsion through a polymerization reaction of polyvinyl alcohol, hydrophobic monomer and hydrophilic monomer in water solution initiated by an initiator; coating a plastic substrate with the said polymer colloidal emulsion using tape-casting method; drying the plastic substrate coated with the polymer colloidal emulsion, and then obtaining the said separators by delaminating them from the substrate. The said separators have good liquid absorbability, high liquid absorption rate and retention, low resistivity, good mechanical strength and good thermal stability (little thermal shrinkage and little size distortion) as well as electrochemical stability. The prepared lithium ion batteries have good cycle stability and long service life.
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公开(公告)号:WO2009079889A1
公开(公告)日:2009-07-02
申请号:PCT/CN2008/000170
申请日:2008-01-24
CPC classification number: H01M2/162 , D04H1/4291 , D04H1/43 , D04H1/4309 , D04H1/4334 , D04H1/435 , D04H1/4382 , D06N3/0011 , D06N3/0063 , D06N2201/02 , D06N2201/0218 , D06N2201/0245 , D06N2201/0254 , D06N2201/0263 , D06N2205/023 , D06N2209/141 , D06N2209/142 , D06N2209/1621
Abstract: A non-woven fabric reinforced microporous polymer membrane for nonaqueous electrolyte batteries or capacitor and manufacturing method thereof. The polymer latex is prepared by copolymerizing water soluble polymer 100 parts, hydrophobic monomer 30-500 parts, hydrophilic monomer 0-200 parts and initiator 1-5 parts. According to 100% solids content of the polymer latex, adding 0-100% inorganic fillers and 20-100% plasticizers, and the paste is obtained. The two surface of the non-woven fabric are coated with the paste, drying, and the non-woven fabric reinforced microporous polymer membrane is obtained.
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公开(公告)号:WO2009115004A1
公开(公告)日:2009-09-24
申请号:PCT/CN2009/070464
申请日:2009-02-18
IPC: C09J129/04 , C09J129/14 , C09J9/00 , H01M4/62 , C09J151/06
CPC classification number: H01M4/621 , C08F261/04 , C08L51/003 , H01M4/622 , H01M10/0525 , C08L2666/02
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