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Porous Power améliore la sécurité, la durée de vie et le rendement des batteries au lithium-ion grâce à un nouveau genre de séparateur en céramique

Porous Power Technologies, LLC (PPT) annonce le lancement de SYMMETRIX® NC2020, un séparateur de batterie en céramique conçu pour améliorer considérablement la stabilité thermique et la sécurité des batteries au lithium-ion de grand format. Il trouve son application dans les batteries pour les véhicules électriques, l’électronique grand public à pile plate, le stockage de l’énergie de qualité utilitaire et d’autres applications à haute puissance ou à haute énergie.

Le séparateur de batterie est un élément essentiel dans l’équation sécurité / durée de vie / rendement. SYMMETRIX NC2020, développé par PPT en partenariat avec Ahlstrom, offre des améliorations considérables dans ces trois domaines, en particulier la sécurité.

« SYMMETRIX NC2020 est ininflammable et plus résistant au rétrécissement que les séparateurs classiques. Cela rend les piles plus stables lorsqu’elles sont endommagées ou malmenées et peut prévenir ou retarder les emballements thermiques », déclare Michael Pender, le directeur général de PPT.

« L’utilisation de la céramique dans les séparateurs n’est pas nouvelle », explique John Shelburne, Directeur de la recherche et du développement de PPT. « Cependant, la plupart des fabricants appliquent un revêtement en céramique sur les séparateurs en polyoléfine classiques. Un revêtement peut entraver la circulation des ions à travers le séparateur, ce qui réduit la durée de vie et le rendement de la batterie ». En outre, il peut se fissurer ou s’écailler, et éventuellement altérer la pile.

En revanche, les particules de céramique de SYMMETRIX NC2020 sont mélangées avec du polymère PVDF pour former une membrane microporeuse riche en céramique et souple. Les ions circulent librement à travers la structure à pores ouverts, permettant aux piles d’être puissantes sur de larges plages de température. La membrane spongieuse s’adapte à la surface de l’électrode pour éviter les zones mortes et garantir un rendement fiable, même lorsque les électrodes se dilatent et se contractent sur de nombreux cycles.

Les autres avantages des séparateurs de batteries lithium-ion SYMMETRIX NC2020 sont :

  • Stabilité thermique et chimique supérieure avec moins de dégradation de la pile à long terme.
  • Faible résistance interne pour une puissance plus élevée avec moins de production thermique.
  • Résistance à l’oxydation et compatibilité avec des réactions chimiques à haute tension.
  • Effet de mèche électrolyte rapide et complet.
  • La capacité de se plaquer en toute sécurité aux électrodes, ce qui simplifie la fabrication et augmente les rendements de production.

Pour plus d’informations ou pour organiser un essai, contactez Porous Power au (001) 720-890-4888 ou à support@porouspower.com.

À propos de Porous Power

Porous Power Technologies, LLC ( www.porouspower.com et https://twitter.com/PorousPower ) fabrique des membranes de séparation qui améliorent la sécurité, la durée de vie et le rendement des batteries lithium-ion, en particulier des piles de grand format pour les véhicules électriques, l’énergie fixe et des applications d’électronique grand public.

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