Institute for Applied Materials – Applied Materials Physics (IAM-AWP)

KIT is “The Research University in the Helmholtz Association.”  and a University of Excellence again since 2019. Since 2008, the IAM ‐ AWP has dealt with a wide variety of LIB issues in numerous public research projects and direct industrial collaborations. The IAM-AWP calorimeter center, led by Dr. Ziebert, was founded in 2011 and operates Europe’s largest battery calorimeter laboratory. It offers for instance six Accelerating Rate Calorimeters (ARC) in various sizes to investigate coin cells, large pouch cells or prismatic automotive cells. The ARCs enable the determination of thermodynamic, thermal and safety data on material, cell and pack level under quasi-adiabatic and isoperibolic environmental conditions for normal as well as for abuse conditions (thermal, electrical, mechanical).

In addition to the battery calorimeters, other important infrastructures for BattUse are glove boxes for assembly/disassembly of cells, eleven temperature chambers, a thermal camera and cyclers with several hundred channels. In addition, differential scanning calorimeters (DSC), thermogravimetric analyzers (TGA), laser flash analyzers (LFA) and sensitive Tian-Calvet calorimeters are available. It is possible to measure thermodynamic and thermophysical parameters such as heat capacities, enthalpies of formation, thermal conductivities at the materials level. CALPHAD method is used in combination with experimental investigations (key experiments) in order to elucidate phase diagrams and thermodynamics of binary, ternary and higher-component material systems. For this CALPHAD modeling Thermo-Calc and Pandat software packages are available.

Project participations

Contact

Prof. Dr. Hans Jürgen Seifert
Telefon: +49 721 608‐23895
E-Mail: hans.seifert@kit.edu

Dr. Carlos Ziebert
Telefon: +49 721 608‐22919
E-Mail: carlos.ziebert@kit.edu

Hermann‐von‐Helmholtz‐Platz 1, 76344 Eggenstein‐Leopoldshafen

www.iam.kit.edu/awp/

Institute for Applied Materials – Electrochemical Technologies

Electrochemical Technologies are cornerstones of the transition towards a renewable energy system and electromobility but also towards sustainable production of fuels and chemicals. At the Institute for Applied Materials – Electrochemical Technologies, we thrive to shape the way we will store energy and produce electricity, fuels or sustainable chemicals. Our long-standing expertise comprises the analysis and optimisation of a wide range of electrochemical (energy) technologies, ranging from batteries and fuel cells to electrolysis and electrosynthesis. Our methods development and virtual tools enable knowledge-driven improvement of the performance and durability of the technologies.

The work at KIT, IAM-ET focuses on the Nonlinear Frequency Response Analysis (NFRA) and its application in online plating detection. It will be investigated whether and to what extent Li plating can be detected via NFRA under usage conditions to increase safety and lifetime of the battery. For this purpose, areas of application, sensitivity and reliability of the methodology are to be identified. The goal is the technical implementation of a quantitative diagnostic methodology for individual cells and, based on this, the scaling from the cell level to the battery system.

Project participations

Contact

Dr.-Ing. André Weber
Adenauerring 20b, 76131 Karlsruhe

Telefon: +49 721 608 47572
E-Mail: andre.weber@kit.edu

www.iam.kit.edu/et

Institute of Therm