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Prof. Dr.-Ing. Julia Kowal
- Julia Kowal
[1]- © privat
Room: EMH 163
Address:
Einsteinufer 11
Sec. EMH 2
10587 Berlin
Phone: +49 (0)30 314-25394
Fax: +49 (0)30 314-21133
E-mail: Julia.Kowal@tu-berlin.de [2]
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.
Vita
| 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 |
| 2010 | PhD at RWTH Aachen,
Topic: "Spatially-resolved impedance of nonlinear inhomogeneous
devices - using the example of the lead-acid
battery" |
| 04/06-05/06 | Visiting researcher
at the company Exide in Azuqueca de Hénares,
Spain |
| 10/05-12/05 | Visiting Researcher
at the research centre RISØ in Roskilde,
Denmark |
| 11/04-12/09 | Research
assistant at the department of Electrochemical Energy Storage
Conversion and Systems at the Institute For Power Electronics and
Electrical Drives (ISEA), RWTH Aachen |
| 10/99-11/04 | 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" |
| 2006 | Herbert-Kind-Price of ETG in the
VDE |
|---|---|
| 2006 | Brigitte-Berkenhoff-Price for the best graduate
in the field of electrical engineering at RWTH
Aachen |
| 2002 | Aachen's VDE
price |
| 2001-2004 | Sponsorship through
the Prof. Dr. Koepchen Merit
Foundation (RWE) |
Publications
| Citation key | Salinas2_2020 |
|---|---|
| Author | Felipe Salinas and Julia Kowal |
| Pages | 140519 |
| Year | 2020 |
| DOI | 10.1149/1945-7111/abc207 |
| Journal | Journal of The Electrochemical Society |
| Volume | 167 |
| Number | 14 |
| Month | oct |
| Publisher | The Electrochemical Society |
| Abstract | A dataset is presented containing the rate capability measured for Lithium-ion cells obtained from old notebook batteries. The experimental results show an intersection of rate capabilities, related to degraded cells that exhibit high reversible capacities compared to the rated value and measured at 0.1C discharge rate, but a fast voltage decay and a constrained discharge capacity measured at 1C. With the aid of an electrochemical model it is shown that this intersection is possible if cells containing a lower concentration of Lithium salt in the electrolyte are compared to others that experienced a higher damage in the electrodes during their first use. This article casts doubts on the validity of a state of health determined from the discharge capacity measured at one rate for the classification of Li-ion batteries for a second life, if applied to datasets containing batteries experiencing diverse degradation paths. |
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Address
Technische Universität BerlinElectrical Energy Storage Technology
Institute of Energy and Automation Technology
Faculty IV
sec. EMH 2
Einsteinufer 11
D-10587 Berlin
Contact
Sec. EMH2Room EMH 162
+49 (0)30 314-21633
+49 (0)30 314-21133
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