S
Stefan Käbitz
Researcher at RWTH Aachen University
Publications - 16
Citations - 3227
Stefan Käbitz is an academic researcher from RWTH Aachen University. The author has contributed to research in topics: Battery (electricity) & Lithium-ion battery. The author has an hindex of 12, co-authored 16 publications receiving 2447 citations. Previous affiliations of Stefan Käbitz include Forschungszentrum Jülich.
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Experimental investigation of the lithium-ion battery impedance characteristic at various conditions and aging states and its influence on the application
TL;DR: In this paper, a 40 Ah lithium-ion cell with nickel manganese cobalt oxide (NMC) cathode material was used to investigate the battery impedance and its dependence on the battery state-of-charge (SoC), temperature, current and previous history.
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Calendar and cycle life study of Li(NiMnCo)O2-based 18650 lithium-ion batteries
Madeleine Ecker,Nerea Nieto,Stefan Käbitz,Johannes Schmalstieg,Holger Blanke,Alexander Warnecke,Dirk Uwe Sauer +6 more
TL;DR: In this paper, an extensive set of accelerated aging tests has been carried out employing a Li-ion high energy 18650 system (2.05-Ah), negative electrode: carbon, positive electrode: Li(NiMnCo)O2).
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A holistic aging model for Li(NiMnCo)O2 based 18650 lithium-ion batteries
TL;DR: In this paper, a holistic aging model from accelerated aging tests is presented to analyze the impact of different impact factors on lithium-ion battery aging and lifetime estimation, which is a fundamental aspect for successful market introduction in high-priced goods like electric mobility.
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Development of a lifetime prediction model for lithium-ion batteries based on extended accelerated aging test data
Madeleine Ecker,Jochen Bernhard Gerschler,Jan Vogel,Stefan Käbitz,Friedrich Hust,Philipp Dechent,Dirk Uwe Sauer +6 more
TL;DR: In this article, a multivariable analysis of a detailed series of accelerated lifetime experiments representing typical operating conditions in a hybrid electric vehicle is presented, where the impact of temperature and state of charge on impedance rise and capacity loss is quantified.
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Modeling mechanical degradation in lithium ion batteries during cycling: Solid electrolyte interphase fracture
TL;DR: In this article, a model based on a system made of a spherical graphite particle surrounded by the solid electrolyte interphase layer was proposed to reproduce capacity fade during battery lifetime, and the model results were compared against cycle life aging experimental data, reproducing accurately the influence of the depth of discharge as well as the average state of charge on the capacity fade.