http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114965344-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_379cbc4d98dc6ceecb9ca914bc17ece5 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2021-3572 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P70-50 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-3563 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-3563 |
| filingDate | 2022-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_83db7968d4af84c52fdb1157ce612cd2 |
| publicationDate | 2022-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114965344-A |
| titleOfInvention | A kind of quantitative analysis method of negative electrode SEI film of lithium ion battery |
| abstract | The invention discloses a quantitative analysis method for the SEI film of a lithium ion battery negative electrode, and relates to the technical field of lithium ion battery pole piece testing. Grind at low temperature to obtain the pole piece powder; in the glove box, weigh the pole piece powder and potassium bromide powder to mix and press, and calculate the absorbance of the Li 2 CO 3 characteristic peak in the infrared spectrum of the sample; put the graphite and lithium carbonate standard Mix the standard mixed samples in different proportions, mix the standard mixed samples with potassium bromide and press them into tablets, and draw a standard curve according to the infrared spectrum ; Thus, the content of Li2CO3 in the SEI film was quantitatively analyzed. In the invention, the content of Li 2 CO 3 in the negative electrode pole piece is measured by infrared spectroscopy, and the growth of the SEI film in the battery cell is quantitatively analyzed, and the growth changes of the SEI film under different chemical forming conditions are tested to find out suitable chemical forming process conditions. |
| priorityDate | 2022-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.