Positivelektrode und Lithiumsekundärbatterie damit

Details

Veröffentlichungs-Nr.

EP4773217

Anmeldetag

26. September 2025

Veröffentlichung

2. April 2026

Rechtsraum

EP

Abstract

The present invention relates to a positive electrode comprising a current collector, and a positive electrode active material layer disposed on the current collector, wherein the positive electrode active material layer comprises a positive electrode active material, a conductive agent, and a binder, the positive electrode active material comprises a lithium iron phosphate-based compound, the conductive agent comprises carbon black, the conductive agent has a BET specific surface area of 200 m²/g to 400 m²/g, and a value of R₁ represented by Equation 1 below is 180 to 500, and a lithium secondary battery comprising the same. R₁ = {[Average particle diameter (D₅₀) value of positive electrode active material] x [BET specific surface area value of conductive agent]} / [Average particle diameter (D₅₀) value of conductive agent]²In Equation 1, the average particle diameter (D₅₀) value (µm) of positive electrode active material, the BET specific surface area value (m²/g) of conductive agent, and the average particle diameter (D₅₀) value (µm) of conductive agent are dimensionless numbers with the units omitted.

Anmelder

Firma

LG Energy Solution, Ltd.

Land

🇰🇷 Südkorea