Elektrochemische Vorrichtung und Elektronische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4769563

Anmeldetag

20. Oktober 2023

Veröffentlichung

24. April 2025

Rechtsraum

EP

Abstract

Provided are an electrochemical device and an electronic device. The electrochemical device includes a positive electrode plate. The positive electrode plate includes a positive electrode active material layer, where the positive electrode active material layer includes a first positive electrode active material and a second positive electrode active material. The first positive electrode active material contains element Ni and element Mn, and the second positive electrode active material contains element Co. A relationship curve of a capacity-voltage differential dQ/dV with respect to voltage V during discharge of the electrochemical device includes a peak a located at 4.1 V to 4.3 V and a peak b located at 3.6 V to 4.0 V. This can achieve good cycling performance and safety performance of the electrochemical device while enhancing the energy density thereof.

Anmelder

Firma

Ningde Amperex Technology Limited

Land

🇨🇳 China