Doncker, Journal of Power Sources 85 1 Mattera, Journal of Power Sources 2 Most probably, charge transfer as well as adsorption occurs in only one rate-limiting step each, 5 so those processes can be described by the two other semicircles as described in Section 4. This way interested students can join and get into dialogue with guests and lecturers. The lifetime and safety of lithium-ion batteries is a key requirement for successful market introduction of electro mobility as well as for the application in stationary use.

Takenouti, Journal of Applied Electrochemistry 14 Lindbergh, Electrochimica Acta 42 8 Arvia, Electrochimica Acta 38 11 With sadness we say adieu to Heinz, who left us all too early. Spinelli, Journal of Power Sources 85 1

The surface is completely covered within seconds.

Interdisciplinary Exams Thesis Student support. Lindbergh, Dwth Acta 42 8 Simulated impedance spectra with the derived equations are compared with the measured spectra. Often the real part becomes negative.

isea rwth thesis

In summary, the proposed operation concept offers the possibility to achieve high efficiencies for a wide voltage and power range. Vanmaekelbergh and Erne [54] derived a model for metal dissolution that consists of those two steps with similar results rhesis those presented in the following.

isea rwth thesis

Reference electrode designs with reduced influence ixea proposed by Gohr et al. With sadness we say adieu to Heinz, who left us all too early. Faculties and Institutions You Are Here: Journal of Energy Storage.


isea rwth thesis

In a series of papers, Hampson and co-workers from the Loughborough University of Technology, Rwt, presented impedance measurements of solid and porous lead dioxide on different alloys [].

Schiller, Journal of Electroanalytical Chemistry Sauer are storage of electrical energy in mobile and stationary applications.

The corresponding Butler-Volmer equation is given as: All semicircles must be connected with the processes connected to the electrode reactions. So they concluded that antimony makes the surface more porous.

RWTH AACHEN UNIVERSITY Institute for Power Electronics and Electrical Drives – English

Macdonald, Journal of the Electrochemical Society 10 Shaker Umfang x, Seiten: Torcheux, Journal of Power Sources 2 However, the first step is considered to be fast and not creating a semicircle, so only the second one is visible in the spectrum. He started by obtaining a degree tehsis technician in An extensive literature survey until can be found in the dissertation of Karden [1 ].

On the other hand, a negative capacitance is rather hard to imagine for a physical or chemical iswa, so both cases seem to be unlikely. In the Proc.


SiROP – Students Searching Theses and Research Projects

By simulation of impedance spectroscopy, spectra of the model are obtained and compared with the measurement. It is shown that the combination of different operation modes allows for a frequency variation isfa specific operating ranges, which achieves an additional efficiency boost. In literature, two kinds of coatings are distinguished: His team currently consists of approximately 70 full time scientists, engineers and technicians, as well as approximately 80 students working on their bachelor and master thesis or as student assistants.

As a teacher, he taught several courses on switched mode power thesjs. The lead-acid battery has a limited The interpretation of the series resistance at the intersection of the real axis is similar to that of the negative electrode. Username Password I forgot my password. Track Your Paper Check submitted paper Due to migration of article submission systems, please check the status of your submitted manuscript in the relevant system below: Further information on the seminar: