Title:
METHOD FOR COMPOSITE DELAMINATION
Document Type and Number:
WIPO Patent Application WO/2021/253787
Kind Code:
A1
Abstract:
Provided is a method for delaminating a composite by immersing the composite into a delamination solution; wherein the composite comprises a substrate and a coating applied on one side or both sides of the substrate comprising a polymeric binder; and wherein the polymeric binder comprises a copolymer comprising a structural unit derived from an acid group-containing monomer. The use of weak acid-containing delamination solution allows for complete delamination of the composite in a highly efficient manner. Furthermore, the delamination method disclosed herein circumvents complex separation process, contamination and corrosion of substrate and enables an excellent materials recovery. An application of the method for delaminating an electrode for a battery is also disclosed.
Inventors:
HO KAM PIU (CN)
JIANG YINGKAI (CN)
DONG YANGJIAN (CN)
JIANG YINGKAI (CN)
DONG YANGJIAN (CN)
Application Number:
PCT/CN2020/139555
Publication Date:
December 23, 2021
Filing Date:
December 25, 2020
Export Citation:
Assignee:
GUANGDONG HAOZHI TECH CO LIMITED (CN)
International Classes:
H01M10/54; B09B3/00; B29B17/02; H01M6/52; H01M10/0525
Foreign References:
| CN109478698A | 2019-03-15 | |||
| JP2006331707A | 2006-12-07 | |||
| US20190260100A1 | 2019-08-22 | |||
| KR20200043844A | 2020-04-28 |
Attorney, Agent or Firm:
YONG HUI INTELLECTUAL PROPERTY (CN)
Download PDF: