Title:
リチウムイオン電池用微孔ポリマー膜およびその製造方法
Document Type and Number:
Japanese Patent JP5193234
Kind Code:
B2
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.
More Like This:
Inventors:
Bread zonrai
Den, Zengua
Lee, Lenghi
One, Lou
Den, Jamin
Doo, Hong Chang
Gao, Jean Dong
Suo, Jixuan
Den, Zengua
Lee, Lenghi
One, Lou
Den, Jamin
Doo, Hong Chang
Gao, Jean Dong
Suo, Jixuan
Application Number:
JP2009552998A
Publication Date:
May 08, 2013
Filing Date:
October 31, 2008
Export Citation:
Assignee:
Chang Zhou Zonkelai Fan Power Development Company Limited
International Classes:
H01G11/52; H01M10/36; H01M50/403; H01M50/411; H01M50/414; H01M50/489; H01M50/491; H01M50/497
Domestic Patent References:
| JP2004227972A | ||||
| JP2006057019A | ||||
| JP60130052A |
Attorney, Agent or Firm:
Hiroe Associates Patent Office