Title:
COMPOSITE CARBON PARTICLES, METHOD FOR MANUFACTURING SAME AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/213628
Kind Code:
A1
Abstract:
The present invention provides composite carbon particles for a lithium ion secondary battery which shows well-balanced and excellent low-temperature charge and discharge rate characteristics, high-temperature storage characteristics and high-temperature cycle characteristics and has low internal resistance and high coulombic efficiency. The composite carbon particles according to the present invention each comprise a carbon particle (A) and a carbonaceous coating layer (B) that coats the surface thereof, wherein the carbonaceous coating layer (B) comprises a carbonaceous coating film layer (B1) and fine carbon particles (B2) and, in differential thermal analysis (DTA) in the atmosphere, has one peak in a temperature range of from 200°C inclusive to 620°C exclusive and two or more peaks in a temperature range of from 620°C inclusive to 1000°C inclusive.
Inventors:
BAEK JINSEOK (JP)
TONEGAWA AKIHISA (JP)
MORI TAKASHI (JP)
KOHNO DAISUKE (JP)
TONEGAWA AKIHISA (JP)
MORI TAKASHI (JP)
KOHNO DAISUKE (JP)
Application Number:
PCT/JP2020/016524
Publication Date:
October 22, 2020
Filing Date:
April 15, 2020
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
International Classes:
C01B32/00; C01B32/182; C01B32/21; H01M4/36; H01M4/587
Domestic Patent References:
| WO2013146144A1 | 2013-10-03 |
Foreign References:
| JP2015519699A | 2015-07-09 | |||
| JP2014116155A | 2014-06-26 | |||
| JP2014107029A | 2014-06-09 | |||
| JP2014123561A | 2014-07-03 |
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
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