Optimized materials characterization
Scanning electron microscope image of cathode active material coated with binder
Source: HZDR/HIF
Modern characterization techniques help us to accurately determine minerals and metals in primary and secondary raw materials. We apply and further develop these techniques to:
- determine the resource and recovery potential of a given raw materials,
- gain fundamental understanding of beneficiation and extraction processes,
- evaluate process efficiency.
Lithium-ion batteries (LIB), for example, are known to have diverse cathode chemistries which result in the application of different recycling routes and parameters. For that reason, we investigate the application of novel key characterization methods such as the automated material characterization which provides information relevant for recovery processes. That includes information on modal phase composition, liberation, association, elemental deportment, as well as particle shape, size and density.
At HIF, we have a wide range of state-of-the-art analytical methods at our disposal. Both bulk and micro-analytical analyses of many different inorganic matrices, especially rock samples but also end-of-life products, can be performed. By using techniques such as Atomic Force Microscopy, we investigate surface characteristics on a micro and nano scale to understand the interaction between minerals and reagents for processes such as flotation.
As good results begin with good preparation, our labs comprise a complete sample preparation infrastructure, in charge with providing high-quality samples and with creating preparation workflows for new materials such as black mass from spent LIB.
