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Porous Power verbessert Sicherheit, Lebensdauer und Leistung von Lithium-Ionen-Batterien durch eine neue Art keramischer Separatoren

Porous Power Technologies LLC (PPT) gibt die Markteinführung von SYMMETRIX® NC2020 bekannt, einem keramischen Batterie-Separator, der dazu entwickelt wurde, die thermische Stabilität und Sicherheit bei großformatigen Lithium-Ionen-Batterien signifikant zu verbessern. Zu den Anwendungsbereichen zählen unter anderem Batterien für Elektrofahrzeuge, Flachzellen für Unterhaltungs- und Haushaltselektronik, standardmäßige Energiespeicherung und sonstige Hochleistungs- oder Hochenergieanwendungen.

Der Batterie-Separator ist ein wichtiger Bestandteil des Dreiecks aus Sicherheit, Lebensdauer und Leistung. Der SYMMETRIX NC2020, der von PPT in Zusammenarbeit mit Ahlstrom entwickelt wurde, bietet deutliche Verbesserungen in allen drei Bereichen, insbesondere im Bereich der Sicherheit.

„Der SYMMETRIX NC2020 ist nicht entzündlich und widerstandsfähiger gegen Spannungsverluste als herkömmliche Separatoren. Dadurch ist die Zelle stabiler, wenn sie beschädigt oder falsch gebraucht wird, und sie ist in der Lage, thermisches Durchgehen zu verhindern oder zu verzögern“, sagt Michael Pender, Managing Director von PPT.

„Der Einsatz von Keramik bei Separatoren ist nicht neu“, erklärt John Shelburne, Leiter der Abteilung für Forschung und Entwicklung bei PPT. „Allerdings tragen die meisten Hersteller bei herkömmlichen Polyolefin-Separatoren eine Keramikbeschichtung auf. Eine solche Beschichtung kann jedoch verhindern, dass Ionen durch den Separator fließen, wodurch die Lebensdauer und die Leistung einer Batterie verringert werden.“ Des Weiteren kann diese Schicht brechen oder abblättern, wodurch die Zelle möglicherweise verunreinigt wird.

Im Gegensatz dazu sind die Keramikpartikel des SYMMETRIX NC2020 mit einem PVDF-Polymer vermischt, um eine flexible, keramikreiche Membran mit Mikroporen zu bilden. Die Ionen können frei durch die offene Porenstruktur fließen, so dass die Zellen über eine gute Leistung in einem breiten Temperaturspektrum verfügen. Die schwammähnliche Membran passt sich an die Elektroden-Oberfläche an, um fließtote Räume zu verhindern und eine zuverlässige Leistung zu gewährleisten, selbst wenn sich die Elektroden über viele Zyklen hinweg ausweiten und zusammenziehen.

Die SYMMETRIX NC2020-Separatoren für Lithium-Ionen-Batterien bieten jedoch noch weitere Vorteile:

  • Bessere thermische und chemische Stabilität bei weniger langfristigem Verschleiß der Zelle
  • Niedrigen inneren Widerstand für eine höhere Leistung und gleichzeitig geringere Wärmeentwicklung
  • Oxidationswiderstand und Kompatibilität mit Hochspannungschemikalien
  • Schnellen und gründliche Elektrolyt-Dochtwirkung
  • Die Fähigkeit, sicher an Elektroden anzuhaften, wodurch die Herstellung vereinfacht und der Produktionsertrag erhöht wird.

Für weitere Informationen oder für die Durchführung eines Versuchs wenden Sie sich bitte an Porous Power unter der Telefonnummer +1 720-890-4888 oder per E-Mail an [email protected].

Über Porous Power

Porous Power Technologies LLC (www.porouspower.com und https://twitter.com/PorousPower) stellt Separator-Membranen her, die die Sicherheit, Lebensdauer und Leistung von Lithium-Ionen-Batterien verbessern, insbesondere bei großformatigen Zellen für Elektrofahrzeuge, stationäre Kraftwerke oder Unterhaltungs- und Haushaltselektronik.

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