Cell analysis

Raman-Mikroskop mit in situ-Messzelle.
© Fraunhofer IFAM

Raman-Mikroskop mit in situ-Messzelle.

Metal-air testing unit.
© Fraunhofer IFAM

Metal-air testing unit.

Post mortem analysis: Raman mapping of an aged graphite electrode with a microscopy image in the background.
© Fraunhofer IFAM

Post mortem analysis: Raman mapping of an aged graphite electrode with a microscopy image in the background.

To improve the energy and performance density of electrochemical energy storage, a comprehensive understanding of the material properties is necessary. In addition to the standard analytics for the characterization of the active materials and electrodes, we use the special methods of in situ and post mortem analytics in order to obtain knowledge of the electrochemical processes in the ongoing cell operation.

Our (electro) chemical physical laboratory encompasses the following analysis methods for material and cell characterization:

  • digital laser microscopy
  • Raster electron microscopy coupled with an energy dispersive x-ray spectroscopy (REM/EDX, in an argon glovebox)n  Thermogravimetric analysis, coupled with mass spectrometry and infrared spectrometry (TG/DSC-MS-IR)
  • Thermogravimetric analysis, coupled with mass spectrometry and infrared spectrometry (TG/DSC-MS-IR)
  • Gas adsorption (BET, Brunauer-Emmett-Teller method) und chemisorption
  • Raman microscopy und in situ Raman spectroscopy
  • Impedance analysis, cyclic voltammetry, cycle tests (RRDE setup in an argon glovebox)

For the electrical testing of cells, modules, and batteries, a variety of battery testers of different performance classes with more than 150 testing channels are available (up to 6 V or 50 V for cells and up to 1000 V for batteries). Our climatic chambers cabinets cover a temperature range of -40°C to 180°C. A special metal-air testing facility also allows the testing of metal-air cells under defined conditions.

We will process your analytical query with speed and flexibility. The Department of Materialography and Analytics at Fraunhofer IFAM offers a wide palette of analysis methods.