Title:
CARBON BLACK, SLURRY AND LITHIUM ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/145543
Kind Code:
A1
Abstract:
The present invention provides carbon black wherein if the carbon black is divided into first primary aggregates having an X value of more than 1.7, second primary aggregates having an X value of 1.7 or less and a Y value of 1.2 or less, third primary aggregates having an X value of 1.7 or less, a Y value of more than 1.2 and a Z value of 2.0 or less, and fourth primary aggregates having an X value of 1.7 or less, a Y value of more than 1.2 and a Z value of more than 2.0, the proportion of the total number of the second primary aggregates and the third primary aggregates is 23% or more. (X): X = L/W
(Y): Y = P2/4πA
(Z): Z = (L×W)/A
(In the formulae, W (µm) is the Feret's diameter of a primary aggregate in the minor axis direction, L (µm) is the Feret's diameter of the primary aggregate in the major axis direction, P (µm) is the length of the periphery of the primary aggregate, and A (µm2) is the projected area of the primary aggregate in a two-dimensional projection image of the primary aggregate obtained by a transmission electronic microscope.)
Inventors:
TANAKA KOSUKE (JP)
HARADA YUSAKU (JP)
HIRATA KAZUTA (JP)
HARADA YUSAKU (JP)
HIRATA KAZUTA (JP)
Application Number:
PCT/JP2023/001212
Publication Date:
August 03, 2023
Filing Date:
January 17, 2023
Export Citation:
Assignee:
DENKA COMPANY LTD (JP)
International Classes:
C09D17/00; C09C1/48; H01M4/62
Foreign References:
| JP2012158627A | 2012-08-23 | |||
| JP2012158662A | 2012-08-23 | |||
| JP2000313821A | 2000-11-14 | |||
| JPS56100862A | 1981-08-13 | |||
| JP2013209504A | 2013-10-10 | |||
| US20210017025A1 | 2021-01-21 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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