http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113764827-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02E60-10 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M50-403 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M50-417 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M50-431 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M50-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M50-451 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M50-457 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M50-489 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M10-0525 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M50-431 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M10-0525 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M50-417 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M50-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M50-489 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M50-457 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M50-451 |
| filingDate | 2021-09-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-08-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-08-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113764827-B |
| titleOfInvention | A kind of microporous modified polypropylene lithium battery separator and preparation method thereof |
| abstract | The invention provides a preparation method of a microporous modified polypropylene lithium battery diaphragm, belonging to the technical field of preparation of lithium ion battery diaphragm, comprising the following steps: S1, preparation of a first polypropylene film; S2, dopamine modified silica nanometer Particle preparation; S3, preparation of a silica nanoparticle layer; S4, preparation of a second polypropylene film; S5, surface modification treatment; the surface modification treatment adopts an ultraviolet light grafting method, and the pre-attachment of 9-fluorenone is carried out. The 2-acrylamide-2-methyl-1-propane sulfonic acid monomer is grafted on the surface of the polypropylene film by branching, and the negatively charged-SO 3- is used to achieve strong electrostatic repulsion to anions, thereby increasing lithium ion In the present invention, by setting up a multi-layer structure, the silica layer is sandwiched between the polypropylene films, and on the basis of retaining the porosity of the diaphragm, the use of adhesives and the shedding of inorganic powders are reduced, and the polypropylene film is improved. heat resistance. |
| priorityDate | 2021-09-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.