Separator, Elektrochemische Vorrichtung und Elektronische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4718617

Anmeldetag

7. Mai 2024

Veröffentlichung

28. November 2024

Rechtsraum

EP

Abstract

This application discloses a separator, an electrochemical device, and an electronic device. The separator includes a separator substrate, a first coating layer, and a second coating layer. The separator substrate includes a first surface and a second surface disposed opposite to each other. The first surface faces a positive electrode, and the second surface faces a negative electrode. The first coating layer is disposed on the first surface, and the second coating layer is disposed on the second surface. The first coating layer is a dense solid filler coating. A porosity of the first coating layer is denoted as D<1>, satisfying: 10% ≤ D<1> < 30%. The second coating layer is a high-porosity solid filler coating. A porosity of the second coating layer is denoted as D<2>, satisfying: 30% ≤ D<2> ≤ 60%. By disposing two coating layers of different performance parameters on two sides of the separator, this application improves the cycle performance, low-temperature discharge performance, and heat resistance of the battery.

Anmelder

Firma

Ningde Amperex Technology Limited

Land

🇨🇳 China