Negatives Elektrodenaktivmaterial für eine Sekundärbatterie mit Nichtwässrigem Elektrolyten, Negative Elektrode für eine Sekundärbatterie mit Nichtwässrigem Elektrolyten, Sekundärbatterie mit Nichtwässrigem Elektrolyten und Verfahren zur Herstellung Dieses Negativen Elektrodenaktivmaterials

Details

Veröffentlichungs-Nr.

EP3062371

Aktenzeichen

EP16000395

Anmeldetag

17. Februar 2016

Veröffentlichung

28. November 2018

Erteilung

28. November 2018

Rechtsraum

EP

IPC

H01M4/134H01M4/36H01M4/38H01M4/485H01M4/587H01M4/62H01M10/052H01M10/0525

Abstract

The present invention provides a negative electrode active material for a non-aqueous electrolyte secondary battery, including negative electrode active material particles containing a silicon compound expressed by SiO<x>where 0.5≤x≤1.6, the negative electrode active material particles at least partially coated with a carbon coating, the carbon coating exhibiting a specific surface area ranging from 5 m<2>/g to 1000 m<2>/g, the specific surface area being measured by a multipoint BET method after the carbon coating is separated from the negative electrode active material particles, the carbon coating exhibiting a compression resistivity ranging from 1.0×10<-3>Ω·cm to 1.0 Ω·cm when the carbon coating is compressed so as to have a density of 1.0 g/cm<3>, the compression resistivity being measured after the carbon coating is separated from the negative electrode active material particles. This negative electrode active material can increase the battery capacity and improve the cycle performance and battery initial efficiency.

Anmelder

Firma

Shin-Etsu Chemical Co., Ltd.

Land

🇯🇵 Japan

Fachgebiete