US 12,272,803 B2
Electrode assembly for evaluating performance of electrode and method for evaluating performing electrode
Hye Bin Kim, Daejeon (KR); and Yong Jun Kim, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/605,258
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Nov. 17, 2020, PCT No. PCT/KR2020/016175
§ 371(c)(1), (2) Date Oct. 21, 2021,
PCT Pub. No. WO2021/137426, PCT Pub. Date Jul. 8, 2021.
Claims priority of application No. 10-2020-0000439 (KR), filed on Jan. 2, 2020.
Prior Publication US 2022/0255151 A1, Aug. 11, 2022
Int. Cl. H01M 10/48 (2006.01); H01M 4/38 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 10/48 (2013.01) [H01M 4/382 (2013.01); H01M 10/0525 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for evaluating performance of an electrode, the method comprising:
providing an electrode assembly for evaluating performance;
immersing the electrode assembly for evaluating the performance in an electrolyte and applying constant current; and
allowing an applied voltage to gradually only increase so as to measure a safety voltage at which lithium dendrite starts to occur,
wherein the electrode assembly for evaluating the performance comprises a portion at which a negative electrode, a second negative electrode, a separator, a reference electrode, a separator, and a positive electrode are sequentially stacked, and
wherein a potential difference value measured between the positive electrode and the second negative electrode is measured as the safety voltage in the reference electrode disposed between the positive electrode and the second negative electrode.