Title:
METHOD FOR PRODUCING CATHODE SLURRY FOR LITHIUM SECONDARY BATTERY, AND CATHODE FOR LITHIUM SECONDARY BATTERY PRODUCED THEREBY
Document Type and Number:
WIPO Patent Application WO/2019/004705
Kind Code:
A1
Abstract:
The present invention provides a method for producing a cathode slurry for a lithium secondary battery, the method comprising the steps of: adding a cathode active material, a conductive material, a binder polymer, and a dispersant to a solvent and mixing the same to obtain a slurry containing 69 to 74 % by mass of solid contents; primarily dispersing the slurry for 50 to 100 minutes such that the transfer rate of the solid contents in the slurry ranges from 3 to 6 m/s; and secondarily dispersing the primarily dispersed slurry for 5 to 20 minutes such that the transfer rate of the solid contents in the slurry ranges from 14 to 27 m/s, wherein the transfer rate of the solid contents denotes the distance measured over each time interval, by which the solid contents transfer due to a force applied to the slurry in a dispersion device used to disperse the slurry.
Inventors:
MOON IL-JAE (KR)
KIM WOO-HA (KR)
AHN BYOUNG-HOON (KR)
CHOY SANG-HOON (KR)
KIM WOO-HA (KR)
AHN BYOUNG-HOON (KR)
CHOY SANG-HOON (KR)
Application Number:
PCT/KR2018/007237
Publication Date:
January 03, 2019
Filing Date:
June 26, 2018
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M4/139; H01M4/04; H01M4/13; H01M4/62; H01M10/04; H01M10/052; H01M50/107
Domestic Patent References:
| WO2014148819A1 | 2014-09-25 |
Foreign References:
| KR20160087353A | 2016-07-21 | |||
| JP2015128012A | 2015-07-09 | |||
| JP2013196804A | 2013-09-30 | |||
| KR19980012675A |
Other References:
See also references of EP 3518326A4
Attorney, Agent or Firm:
PHIL ONZI INTL PATENT LAW FIRM (KR)
Download PDF: