US 12,595,177 B2 · Carbonaceous material for electrochemical device, production method therefor, negative electrode for electrochemical device, and electrochemical device

Abstract

An object of the present invention is to provide a carbonaceous material suitable as an electrode material of an electrochemical device which is increased in capacity with not only suppression of an increase in irreversible capacity, but also securement of a high electrode density, as well as a method for producing the carbonaceous material The present invention relates to a carbonaceous material for an electrochemical device, having a specific surface area of 23 m2/g or less as measured according to a BET method and an aerated energy (AE) of 40 mJ or more and 210 mJ or less as measured with a powder rheometer.

Claims11

Dependent claims

A carbonaceous material for an electrochemical device, having

a specific surface area of 18 m2/g or less as measured according to a BET method,
an aerated energy of 40 mJ or more and 210 mJ or less as measured with a powder rheometer,
an average particle size D50, where a cumulative volume from a fine particle side in a particle size distribution measured according to a laser scattering method reaches 50%, of 1 μm or more and 50 μm or less, and
a particle size distribution index D50/D10, which is a ratio of the average particle size D50 to a particle size D10 where the cumulative volume from the fine particle side reaches 10%, of 1.9 or more.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

17/767,120Filed 6 Oct 2020

Priority

JP 2019-18698210 Oct 2019

Published

US 2022/0371893 A124 Nov 2022

Granted

7 Apr 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification22 codes

C01B 32/05
Carbon; Compounds thereof: preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
C01B 32/318
Preparation: characterised by the starting materials
C01B 32/336
Preparation: characterised by gaseous activating agents
H01G 11/24
Electrodes: characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity;…

Carbonaceous material for electrochemical device, production method therefor, negative electrode for electrochemical device, and electrochemical device

Life of this patent

Carbonaceous material for electrochemical device, production method therefor, negative electrode for electrochemical device, and electrochemical device

Life of this patent

Abstract

Claims11