Bindemittel für Positive Elektrode

Details

Veröffentlichungs-Nr.

EP4773248

Anmeldetag

30. August 2024

Veröffentlichung

6. März 2025

Rechtsraum

EP

IPC

H01M4/62

Abstract

The present invention provides a binder for positive electrodes that has excellent viscosity characteristics (dispersibility) and stability of the conductive material dispersion when manufacturing electrodes for electrochemical elements, and can improve the peel strength of the electrodes manufactured, and the output characteristics, the cycle characteristics, and the effect of suppressing cracking of the electrode active material after cycle testing of the electrochemical element. The binder for positive electrodes according to the present invention is made by dissolving or dispersing in N-methylpyrrolidone (NMP) hydrogenated nitrile rubber, which contains a nitrile group-containing monomer unit, a conjugated diene monomer unit and/or an alkylene structural unit, has a weight average molecular weight (Mw) of 1,000 to 1,000,000 and an iodine value of 0.1 to 100 mg/100 mg, contains a phenol-based antiaging agent, and has a palladium (Pd) content of 50 ppm or less and a calcium (Ca) content of 1 to 2000 ppm.

Anmelder

Firma

Zeon Corporation

Land

🇯🇵 Japan