TU Berlin

Electrical Energy Storage TechnologyChair

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Prof. Dr.-Ing. Julia Kowal

Julia Kowal

Room: EMH 163


Einsteinufer 11

Sec. EMH 2

10587 Berlin

Phone: +49 (0)30 314-25394

Fax:     +49 (0)30 314-21133


Consultation hours: On Mondays 9 - 10 h and on appointment. In summer semester 2022 (25.4.-18.7.), the consultation hour will be from 10-11 h.

In most weeks, I am in the office on mondays, so a personal meeting is possible again. To be sure, please ask before you come. Alternatively, you can phone me or we can arrange a Zoom meeting.


since 03/2014
Chair of Electrical Energy Storage Technology at the TU Berlin
01/10 - 02/14
Senior engineer at the department of Electrochemical Energy Conversion and Storage Systems, ISEA, RWTH Aachen
PhD at RWTH Aachen, Topic: "Spatially-resolved impedance of nonlinear inhomogeneous devices - using the example of the lead-acid battery"
Visiting researcher at the company Exide in Azuqueca de Hénares, Spain
Visiting Researcher at the research centre RISØ in Roskilde, Denmark
Research assistant at the department of Electrochemical Energy Storage Conversion and Systems at the Institute For Power Electronics and Electrical Drives (ISEA), RWTH Aachen
Studies of electrical engineering at RWTH Aachen Diploma thesis: "Investigation of the thermal behaviour of electrochemical energy storage systems in vehicle on-board power supplies"



Awards and Scholarships
Herbert-Kind-Price of ETG in the VDE
Brigitte-Berkenhoff-Price for the best graduate in the field of electrical engineering at RWTH Aachen
Aachen's VDE price
Sponsorship through the Prof. Dr. Koepchen Merit Foundation (RWE)


Dynamic Modeling of Li-Ion Batteries Using an Equivalent Electrical Circuit

Dong, T. K. and Kirchev, A. and Mattera, F. and Kowal, J. and Bultel, Y.

J. Electrochem. Soc., A326-A336. 2011

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Detailed Analysis of the Self Discharge of Supercapacitors

Kowal, J. and Avaroglu, E. and Chamekh, F. and Senfelds, A. and Thien, T. and Sauer, D. U.

J. Power Sources, 573-579. 2011

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Dynamic Charge Acceptance of Lead-Acid Batteries: Comparison of Methods for Conditioning and Testing

Budde-Meiwes, H. and Schulte, D. and Kowal, J. and Sauer, D. U. and Hecke, R. and Karden, E.

8th International Conference on Lead-Acid Batteries, 8th LABAT 2011

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Electrochemical Double-Layer Capacitors: Electrical Behaviour, Applications and Lifetime

Drillkens, J. and Yurdagel, Y. and Kowal, J. and Sauer, D. U.

International Renewable Energy Storage Conference, IRES 2010

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Maximizing the lifetime of electrochemical double layer capacitors at given temperature conditions by optimized operating strategies

Drillkens, J. and Yurdagel, Y. and Kowal, J. and Sauer, D. U.

4th European Symposium on Supercapacitors and Applications, ESSCAP 2010

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Modellansätze zur Performance- und Lebensdauersimulation von Lithium-Ionen Batterien - Maßgeschneiderte Simulationstools für den F & E Prozess von Speichersystemen für Fahrzeug- und Netzapplikationen

Gerschler, J. B. and Käbitz, S. and Kowal, J. and Ecker, M. and Magnor, D. and Sauer, D. U.

2nd European Conference Smart Grids & E-Mobility 2010

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DC Resistance of SLI Batteries in Microhybrid Vehicles: Can Flooded and AGM Designs Meet Vehicle Requirements?

Karden, E. and Fricke, B. and Budde-Meiwes, H. and Kowal, J. and Sauer, D. U.

12th European Lead Battery Conference, ELBC 2010

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How Can Impedance Spectroscopy Be Trusted? A Review on Quality

Budde-Meiwes, H. and Kowal, J. and Sauer, D. U. and Karden, E.

12th European Lead Battery Conference, ELBC 2010

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Efficient battery models for the design of EV drive trains

Kowal, J. and Gerschler, J. B. and Schäper, C. and Schoenen, T. and Sauer, D. U.

International Power Electronics and Motion Control Conference, EPE-PEMC 2010

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Parameterisation of spatially resolved impedance for non-linear inhomogeneous devices

Kowal, J. and Sauer, D. U.

8th International Symposium on Electrochemical Impedance Spectroscopy 2010

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Vergleich verschiedener Speichertechnologien und Einordnung von Supercaps

Kowal, J.

Innovationsworkshop \glqq Energiespeicherung und deren zukünftige Applikationen \grqq 2010

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Modelling the effects of charge redistribution during self-discharge of supercapacitors

Kaus, M. and Kowal, J. and Sauer, D. U.

Electrochim. Acta, 7516-7523. 2010

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Impedance of nonlinear current or voltage dependent device

Kowal, J. and Sauer, D. U.

International Workshop on Impedance Spectroscopy, IS 2009

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