Dispergiermittelzusammensetzung für Elektrochemisches Element, Leiterdispersion für Elektrochemisches Element, Aufschlämmung für Elektrochemische Elementelektrode und Elektrochemisches Element

Details

Veröffentlichungs-Nr.

EP4773220

Anmeldetag

26. August 2024

Veröffentlichung

6. März 2025

Rechtsraum

EP

Abstract

Provided is a dispersant composition for an electrochemical device with which it is possible to form an electrode for an electrochemical device that can reduce IV resistance of an electrochemical device. The dispersant composition for an electrochemical device contains a polymer A that includes a nitrile group-containing monomer unit and an alkylene structural unit having a carbon number of 4 or more. When the weight-average molecular weight of the polymer A is taken to be M_A and the viscosity measured at a temperature of 25°C for a polymer solution obtained by adding N-methyl-2-pyrrolidone to the polymer A such that the concentration of the polymer A is 10 mass% is taken to be η_A (mPa·s), a value F_A calculated by F_A = (η_A/M_A) × 1,000 is not less than 0.1 and not more than 9.0. When the transverse relaxation time measured at a temperature of 25°C for N-methyl-2-pyrrolidone is taken to be T2_S (ms) and the transverse relaxation time measured at a temperature of 25°C for a polymer solution obtained by adding N-methyl-2-pyrrolidone to the polymer A such that the concentration of the polymer A is 1 mass% is taken to be T2c (ms), a T2 ratio calculated by T2 ratio = T2_S/T2_C is not less than 1.1 and not more than 1.8.

Anmelder

Firma

Zeon Corporation

Land

🇯🇵 Japan