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Keynote Lecture

WEB Multi-scale 3D imaging approaches for analysis of lithium ion battery electrode microstructures

Wednesday (23.09.2020)
16:50 - 17:20 C: Characterization 1
Part of:

Deep knowledge of the 3D microstructure is essential for optimizing performance in Lithium ion batteries electrodes. Tomography methods like focused ion beam-secondary electron microscopy (FIB-SEM) and X-ray tomography are the most frequently used 3D characterization techniques for battery electrodes. While each method has advantages and disadvantages, understanding the complex morphology of electrodes requires a complementary, multi-scale 3D approach.

We present here results from two case studies where lithium ion battery electrodes were imaged and analyzed across different length scales, and with different modalities in a correlative manner. First, results from imaging a LiNiCoAlO2-LiCoO2 blend cathode from a commercial cell are presented where both 3D x-ray microscopy and FIB-SEM tomography were used to reveal a complex 3D microstructure. Next, we discuss results from multi-scale x-ray microscopy analysis of a commercial graphite anode where both micro- and nano-scale x-ray microscopy reveal complementary details on the transport network within the electrode. Implications towards material simulation and modeling results will be briefly discussed for each case.


Dr. Stephen Kelly
Carl Zeiss X-ray Microscopy, Inc.
Additional Authors:
  • Jochen Joos
    Karlsruhe Institute of Technology (KIT)
  • Tobias Volkenandt
    Carl Zeiss Research Microscopy Solutions
  • Robin White
    Carl Zeiss Research Microscopy Solutions
  • Benjamin Tordoff
    Carl Zeiss Research Microscopy Solutions
  • André Weber
    Karlsruhe Institute of Technology (KIT)
  • Ellen Ivers-Tiffée
    Karlsruhe Institute of Technology (KIT)