Statistical Analysis of Solid Electrolyte Interface Formation: Correlation of Gas Composition, Electrochemical Data and Performance
Batteries & Supercaps, vol. 7
Abstract
Abstract The SEI is a crucial yet little understood component of lithium‐ion batteries. The specific formation processes creating the SEI are still a matter of current research. In our paper, we analyse the electrochemical processes by incremental capacity analysis (ICA) and correlate these results with the evolved gas species and subsequent performance of the cells. 101 cells in total divided in three groups with different electrolytes performed a formation cycle. Afterwards gas‐samples of half of the cells were extracted for analysis. We found a good correlation between variations of gas composition and noticeable ICA‐data. Furthermore we explore correlations between formation and initial cell performance after a total of 10 cycles. Our results open new possibilities for a better understanding of formation processes.
Authors 5
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Sebastian Klick corresponding Aachen Institute for Power Electronics and Electrical Drives (ISEA) Chair for Electrochemical Energy Conversion and Storage Systems Institute for Power Electronics and Electrical Drives (ISEA)
RWTH Aachen University · Helmholtz-Institute Münster
Affiliation as printed
Chair for Electrochemical Energy Conversion and Storage Systems Institute for Power Electronics and Electrical Drives (ISEA) RWTH Aachen University Aachen 52074 Germany
Helmholtz Institute Muenster (HIMS), IEK-12, Forschungszentrum Juelich Campus-Boulevard 89 52074 Aachen
RWTH Aachen University: Rheinisch-Westfalische Technische Hochschule Aachen, Institute for Power Electronics and Electrical Drives, Campus-Boulevard 89, 52074 Aachen, GERMANY
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Karl Martin Graff Aachen Aging Processes and Lifetime Prediction of Batteries Institute for Power Electronics and Electrical Drives (ISEA)
RWTH Aachen University · Helmholtz-Institute Münster
Affiliation as printed
Aging Processes and Lifetime Prediction of Batteries Institute for Power Electronics and Electrical Drives (ISEA) RWTH Aachen University 52074 Aachen Germany
Helmholtz Institute Muenster (HIMS), IEK-12, Forschungszentrum Juelich Campus-Boulevard 89 52074 Aachen
Aging Processes and Lifetime Prediction of Batteries Institute for Power Electronics and Electrical Drives (ISEA) RWTH Aachen University 52074 Aachen Germany
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Gereon Karsten Stahl Aachen Chair for Electrochemical Energy Conversion and Storage Systems Institute for Power Electronics and Electrical Drives (ISEA)
RWTH Aachen University · Helmholtz-Institute Münster
Affiliation as printed
Chair for Electrochemical Energy Conversion and Storage Systems Institute for Power Electronics and Electrical Drives (ISEA) RWTH Aachen University Aachen 52074 Germany
Helmholtz Institute Muenster (HIMS), IEK-12, Forschungszentrum Juelich Campus-Boulevard 89 52074 Aachen
Chair for Electrochemical Energy Conversion and Storage Systems Institute for Power Electronics and Electrical Drives (ISEA) RWTH Aachen University Aachen 52074 Germany
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Egbert Figgemeier Aachen Aging Processes and Lifetime Prediction of Batteries Institute for Power Electronics and Electrical Drives (ISEA)
RWTH Aachen University · Jülich Aachen Research Alliance · Helmholtz-Institute Münster
Affiliation as printed
Aging Processes and Lifetime Prediction of Batteries Institute for Power Electronics and Electrical Drives (ISEA) RWTH Aachen University 52074 Aachen Germany
Helmholtz Institute Muenster (HIMS), IEK-12, Forschungszentrum Juelich Campus-Boulevard 89 52074 Aachen
Juelich Aachen Research Alliance, JARA-Energy Germany
Aging Processes and Lifetime Prediction of Batteries Institute for Power Electronics and Electrical Drives (ISEA) RWTH Aachen University 52074 Aachen Germany
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Dirk Uwe Sauer Aachen Chair for Electrochemical Energy Conversion and Storage Systems Institute for Power Electronics and Electrical Drives (ISEA)
RWTH Aachen University · Jülich Aachen Research Alliance · Helmholtz-Institute Münster
Affiliation as printed
Chair for Electrochemical Energy Conversion and Storage Systems Institute for Power Electronics and Electrical Drives (ISEA) RWTH Aachen University Aachen 52074 Germany
Helmholtz Institute Muenster (HIMS), IEK-12, Forschungszentrum Juelich Campus-Boulevard 89 52074 Aachen
Juelich Aachen Research Alliance, JARA-Energy Germany
Chair for Electrochemical Energy Conversion and Storage Systems Institute for Power Electronics and Electrical Drives (ISEA) RWTH Aachen University Aachen 52074 Germany
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