WO2025233653 - NONWOVEN BATTERY SEPARATOR, BATTERIES INCLUDING THE NON-WOVEN BATTERY SEPARATOR, AND PROCESSES OF MANUFACTURE
National phase entry is expected:
Publication Number
WO/2025/233653
Publication Date
13.11.2025
International Application No.
PCT/IB2024/054379
International Filing Date
06.05.2024
Title **
[English]
NONWOVEN BATTERY SEPARATOR, BATTERIES INCLUDING THE NON-WOVEN BATTERY SEPARATOR, AND PROCESSES OF MANUFACTURE
[French]
SÉPARATEUR DE BATTERIE NON TISSÉ, BATTERIES COMPRENANT LE SÉPARATEUR DE BATTERIE NON TISSÉ ET PROCÉDÉS DE FABRICATION
Applicants **
AHLSTROM OYJ
Inventors
HADDAD, Raoudha
BRUNO, Pierre Yves
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
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| Number of Pages with Drawings | * |
| Pages of Specification | * |
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| Number of Office Actions | * |
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| * | |
| * | |
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2226 | |
| EPO | Filing, Examination, Granting | 12776 | |
| Japan | Filing, Examination, Granting | 2451 | |
| South Korea | Filing, Examination, Granting | 2515 | |
| USA | Filing, Examination, Granting | 5540 |
Total:
25,508
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Abstract[English]
A non-woven battery separator and processes for forming the non-woven battery separator includes a fiber blend including cellulose fibers, microfibrillated fibers, and optionally polyester and/or aramid fibers. Also disclosed are batteries including the non-woven battery separator. During fabrication, the non-woven battery separator can be effectively dried at temperatures between 120°C and 180°C, which results in the fibers absorbing water when in use. Some battery electrolytes such as lithium hexafluorophosphate react with water to form hydrogen fluoride (HF), which can be corrosive and shorten battery lifecycles and affect performance. Absorbing water from the electrolyte increases the battery life cycle by reducing HF generation.[French]
Un séparateur de batterie non tissé et des processus de formation du séparateur de batterie non tissée font intervenir un mélange de fibres comprenant des fibres de cellulose, des fibres microfibrillées et éventuellement des fibres de polyester et/ou d'aramide. L'invention concerne également des batteries comprenant le séparateur de batterie non tissé. Pendant la fabrication, le séparateur de batterie non tissé peut être efficacement séché à des températures comprises entre 120 °C et 180 °C, ce qui amène les fibres à absorber de l'eau lors de l'utilisation. Certains électrolytes de batterie tels que l'hexafluorophosphate de lithium réagissent avec l'eau pour former du fluorure d'hydrogène (HF), qui peuvent être corrosifs et raccourcir les cycles de vie de batterie et affecter les performances. L'absorption d'eau à partir de l'électrolyte prolonge le cycle de vie de la batterie en réduisant la génération de HF.