Battery aging analytics

  Copyright: © ISEA

Post-Mortem Analyses are being carried out to understand the underlying physical and chemical aging processes causing the electrically measurable performance degradation. We have a well equipped and state of the art analysis laboratory in which we are performing a variety of spectroscopic and physical-chemical experiments. This enables us to holistically investigate electrochemical energy storages like lead-acid and lithium-ion accumulators at our institute. This gain of knowledge always directly feeds into a better understanding of batteries in system and field usage and into optimizing the working conditions. The results are used to further develop our electric, thermal and lifetime models (MAL), to optimize diagnostic algorithms and operational managements (BST, NIS).



  • Laboratory with protective gas gloveboxes for
    • Small format pouch cell production (1-layer) and coin cell manufacturing
    • Cell openings and tear downs, Post-Mortem Analysis
    • Microscopy, Spectroscopy
  • Atomic emission spectroscopy (ICP-OES, Varian 725 ES)
  • Thermogravimetric analysis with differential scanning calorimetry, mass spectrometry (Mettler Toledo TGA/DSC 1)
  • X-ray diffraction (Panalytical Empyrean)
  • Porosimetry: Mercury intrusion (Thermo Scientific Pascal 140 & 440) and gas adsorption (Micromeritics 3Flex)
  • Gas chromatrography with mass spectrometry (Perkin Elmer Clarus 680 & 600C)
  • Raman spectroscopy and FT infrared spectroscopy (Bruker Senterra and Bruker Vertex 70, Hyperion 1000)
  • Laser and VIS microscopy (Keyence VK9700, Zeiss)
  • Laser Flash Analyzer (Netzsch LFA 457)
  • Electron microscopy (scanning and trans), in collaboration with Central Facility for Electron Microscopy of RWTH Aachen University