Title:
METHOD FOR PRECISELY ANALYZING DEGREE OF IMPREGNATION OF ELECTROLYTE OF ELECTRODE IN CELL
Document Type and Number:
WIPO Patent Application WO/2020/032545
Kind Code:
A1
Abstract:
The present invention relates to a method for analyzing a degree of impregnation of an electrolyte of an electrode in a battery cell, the method comprising: a battery cell manufacturing step (S1) of preparing a battery cell by injecting an electrolyte into a battery cell including an electrode to be evaluated; a step of charging/discharging the battery cell several times and obtaining a capacity-voltage profile for each cycle (S2); a step of obtaining a differential capacity (dV/dQ) curve obtained by differentiating the capacitance-voltage profile for each cycle with respect to the capacity (S3); and a step of, in the differential capacity curve, determining a cycle at which behavior becomes the same as a time point when impregnation is sufficiently performed (S4).
Inventors:
HAN SONG YI (KR)
KIM YOUNG DEOK (KR)
KIM DAE SOO (KR)
KIM YOUNG DEOK (KR)
KIM DAE SOO (KR)
Application Number:
PCT/KR2019/009808
Publication Date:
February 13, 2020
Filing Date:
August 06, 2019
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M10/42; G01R31/3842; G01R31/385; H01M10/44
Domestic Patent References:
| WO2018056139A1 | 2018-03-29 |
Foreign References:
| KR20170111772A | 2017-10-12 | |||
| JP2012181976A | 2012-09-20 | |||
| KR100865401B1 | 2008-10-24 | |||
| JP2018041529A | 2018-03-15 | |||
| KR20180092997A | 2018-08-20 |
Other References:
See also references of EP 3703177A4
Attorney, Agent or Firm:
KIM, Hong Gyun (KR)
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