Elektrochemische Vorrichtung und Elektronische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4773364

Anmeldetag

4. Juli 2024

Veröffentlichung

6. März 2025

Rechtsraum

EP

Abstract

An electrochemical device (100) and an electronic device are provided. The electrochemical device (100) includes an electrode assembly (10) and an electrolyte, where the electrode assembly (10) includes an electrode tab (20), and an electrode tab sealant (30) is provided on the electrode tab (20). In a direction perpendicular to an extension direction of the electrode tab (20), a width of the electrode tab sealant (30) exceeds a maximum width of the electrode tab (20) by A mm, where 1.8 ≤ A ≤ 2.6. The electrolyte includes a linear ester, where based on a mass of the electrolyte, a mass percentage of the linear ester is B%, with A/B meeting 0.0215 ≤ A/B ≤ 0.058. The inclusion of the linear ester in the electrolyte, along with controlling the values of A and A/B within the above ranges, can address the issue of high solubility of the electrode tab (20) sealant caused by high content of the linear ester, reduce the content of impurity in the electrolyte, facilitate the transport of ions in the electrolyte, and reduce side reactions in the electrolyte, thereby improving the cycling performance and rate performance of the electrochemical device (100).

Anmelder

Firma

Ningde Amperex Technology Limited

Land

🇨🇳 China