http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108987687-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02E60-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M2004-027 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M2004-021 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M10-0525 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M4-628 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M4-624 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M4-587 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M4-366 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M4-626 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M4-62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M10-0525 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M4-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M4-587 |
| filingDate | 2018-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108987687-B |
| titleOfInvention | Low-temperature lithium ion battery graphite negative electrode material and preparation method thereof |
| abstract | The invention relates to a graphite cathode material of a low-temperature lithium ion battery and a preparation method thereof. The graphite cathode material of the low-temperature lithium ion battery comprises graphite and a fast ion conductor coated on the surface of the graphite; the fast ion conductor has a higher oxidation-reduction potential than graphite. The preparation method comprises the following steps: carrying out wet ball milling on original graphite powder, drying the mixed solution into powder by using a spray dryer to obtain graphite powder with smaller particle size, carrying out intercalation reaction on the graphite powder, and then carrying out surface coating to obtain the graphite cathode material for the low-temperature lithium ion battery. In the structure of the negative electrode material, the particle size of graphite can be controlled, the lithium ion diffusion distance is shortened, the distance between graphite layers is increased after intercalation, the ion diffusion capacity of the electrode material at low temperature can be obviously improved, the overall conductivity can be improved by metal or high-conductivity substances inserted between the graphite layers, a fast ion conductor is coated on the surface of graphite, a stable and uniform SEI film can be generated, the lithium ion diffusion capacity is improved, and the interface performance at low temperature is improved. The material can also be used as an ideal cathode material of a sodium-ion battery and a high-performance super capacitor material. |
| priorityDate | 2018-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 149.