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Impedance Spectroscopic Investigation of the Impact of Erroneous Cell Assembly on the Aging of Lithium‐Ion Batteries
Author(s) -
Heins Tom Patrick,
Leithoff Ruben,
Schlüter Nicolas,
Schröder Uwe,
Dröder Klaus
Publication year - 2020
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201900288
Subject(s) - anode , dielectric spectroscopy , electrode , materials science , cathode , lithium (medication) , electrochemistry , electrical impedance , lithium iron phosphate , ion , relaxation (psychology) , accelerated aging , battery (electricity) , analytical chemistry (journal) , optoelectronics , composite material , chemistry , electrical engineering , medicine , psychology , social psychology , power (physics) , physics , engineering , organic chemistry , quantum mechanics , chromatography , endocrinology
The impact of erroneously aligned electrodes on the aging of stacked large‐format lithium‐ion batteries is monitored by electrochemical impedance spectroscopy (EIS). Based on the application of the distribution of relaxation times (DRT) method, the deterioration of the kinetics of anode and cathode due to prolonged cycling can be determined individually. Cells with different degrees of erroneous electrode positioning are produced and compared. Thereby, the origin of the accelerated aging of cells with misaligned electrodes is revealed.