The successful collaboration among the Chair of Technical Electrochemistry (TEC), the Institute for Machine Tools and Industrial Management (iwb), and the Institute for Electrical Energy Storage Technology (EES) within the projects ExZellTUM II (grant no.: 03XP0081) und ExZellTUM III (grant no.: 03XP0255) supported by the German Federal Ministry of Education and Research (BMBF) resulted in the… [read more]

The "battery with windows" makes it possible to measure the lithium concentration within an electrode as a function of depth during charging and discharging with the help of neutrons. The new technique can help clarify reaction mechanisms in batteries and understand ageing phenomena. [read more]

The paper reports investigations of the formation of space charge layers at different electrode polarisations using impedance spectroscopy. Which are analysed with a physical equivalent circuit model describing the response of the solid/solid interfaces under blocking conditions. [read more]

The Institute for Electrical Energy Storage Technology exists now for 10 years. Therefore we offer an overview over the research, the projects and the tasks of the Institute in a revised brochure about the Institute. You can download the brochure here. [read more]

Scientists study the growth of solid electrolyte interphases (SEI) on graphite anodes in the graphite-NMC-cells and characterize the accumulation of Li on the graphite particles. Furthermore the impact of lamination, formation and cycling of the cell on this SEI accumulation was quantified. [read more]

Modelling of the Calendering Process of NMC-622 Cathodes in Battery Production Analyzing Machine/ Material–Process–Structure Correlations David Schreiner,* Maximilian Oguntke, Till Günther, and Gunther Reinhart / Energy Technology 7.11 (2019): 1900840, DOI [read more]

In the recent publication "Li-ion half-cells studied operando during cycling by small-angle neutron scattering" a Li-ion half-cell with a graphite electrode is cycled against a metallic lithium counter-electrode using small-angle neutron scattering. [read more]

The recently published paper "Analysis and modeling of cycle aging of a commercial LiFePO4/graphite cell" by Dr. Maik Naumann and co-authors deals with the cyclic aging of commercial LFP graphite cells and its modeling.   Based on a large-scale cycling experiment, the most important influencing parameters for aging were identified and transferred into a semi-empirical model. This model was… [read more]

The 8th Battery Forum took place in Berlin from 22 to 24 January 2020, organized by the Competence Network Lithium-Ion Batteries (KLiB) with the support of the Federal Ministry of Education and Research (BMBF). On the first day of the event, invited speakers from industry, science and politics looked at the topic of batteries in Germany from different perspectives. On the following two days,… [read more]