| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f0624e7fb5c8084de865fe1a2031d8f3 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M10-345
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M4-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T29-49108
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P70-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02E60-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M10-446 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H02J7-0069
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M10-288
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M10-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M4-0447 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M4-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M10-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M4-52 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M10-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M10-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H02J7-00 |
| filingDate |
1999-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_05055f89cb0b8bd22f9ce0da1e2d915c |
| publicationDate |
2000-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-0014820-A1 |
| titleOfInvention |
A METHOD OF FORMING CoOOH and NiOOH IN A NiMH ELECTROCHEMICAL CELL AND AN ELECTROCHEMICAL CELL FORMED THEREBY |
| abstract |
A formation procedure for a NiMH electrochemical cell is disclosed that significantly shortens the time required to fully form such a cell. The formation procedure includes a first step during which the cell is charged at a constant voltage of preferably 1.0 volt for approximately three hours. A second charging step is performed by applying either a constant charge current at a predetermined rate of C/3 for five hours or applying a constant voltage of 1.45 to 1.5 volts for five to nine hours. A third step may optionally be used whereby the cell is charged at a constant current of C/10 for about two hours. NiMH cells subjected to this formation procedure have a much greater percentage of the starting cobalt material in the positive electrode converted to CoOOH thereby improving the conductive matrix formed about the Ni(OH)2/NiOOH particles, which constitute the active material of the positive electrode. The disclosed inventive formation procedures result in higher utilization, higher cell capacities following long-term storage, or storage at high temperatures as well as improved capacity recovery following deep discharge. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115207502-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115207502-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013053440-A1 |
| priorityDate |
1998-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |