| (19) |
 |
|
(11) |
EP 4 345 980 A8 |
| (12) |
CORRECTED EUROPEAN PATENT APPLICATION |
|
Note: Bibliography reflects the latest situation |
| (15) |
Correction information: |
|
Corrected version no 1 (W1 A1) |
| (48) |
Corrigendum issued on: |
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08.05.2024 Bulletin 2024/19 |
| (43) |
Date of publication: |
|
03.04.2024 Bulletin 2024/14 |
| (22) |
Date of filing: 20.12.2022 |
|
| (51) |
International Patent Classification (IPC):
|
| (52) |
Cooperative Patent Classification (CPC): |
|
H01M 10/54 |
|
| (84) |
Designated Contracting States: |
|
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT
NL NO PL PT RO RS SE SI SK SM TR |
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Designated Extension States: |
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BA |
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Designated Validation States: |
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KH MA MD TN |
| (30) |
Priority: |
30.09.2022 US 202217957753
|
| (71) |
Applicant: Ascend Elements, Inc. |
|
Westborough, MA 01581 (US) |
|
| (72) |
Inventors: |
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- Kim, Kee-Chan
Westborough, 01581 (US)
- Matthew, Eggert
Westborough, 01581 (US)
|
| (74) |
Representative: Greaves Brewster LLP |
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Copa House
Station Road
Cheddar, Somerset BS27 3AH
Cheddar, Somerset BS27 3AH (GB) |
|
| |
|
| (54) |
NICKEL-METAL HYDRIDE (NIMH) BATTERY RECYCLING |
(57) Recycling of nickel-metal hydride (NiMH) batteries extracts substantially pure nickel
based on adding a leach agent to granular cathode material resulting from agitation
of the NiMH batteries to form a leach solution. A pH of the leach solution is maintained
for precipitating iron, aluminum and lanthanide rare earth elements (REE) for yielding
a nickel solution for forming a cathode material precursor in a recycled battery,
often with a high nickel content.