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Welcome to S2E Research Group,
where we pioneer electrochemistry in energy solutions, specializing in battery technologies. Our focus is on sustainable innovation, crafting affordable and safe electrode materials like PBAs. With expertise in synthesis, electrochemical characterization, and structural analysis, we're driving towards a greener future. Explore our research and join us in shaping tomorrow's energy landscape.
2D X-ray Fluorescence Imaging as a Probe for Charge State Distribution of Manganese in Aged MnHCF-Based Electrodes
Mariam Maisuradze, Ilaria Carlomagno, Angelo Mullaliu, Min Li, Giuliana Aquilanti, and Marco Giorgetti
The contrast images of the different states of charge of manganese in a manganese hexacyanoferrate (MnHCF) cathode material are achieved with the synchrotron-based two-dimensional (2D) X-ray fluorescence (XRF) technique. XRF, otherwise known to be unable to differentiate between the various oxidation states of the elements, in this case becomes sensitive through the modification of the initial excitation energy due to the advantage of the particularly large energy gap between the K-edge energies of manganese species in the different oxidation states of MnHCF.
Mapping Heterogeneity of Pristine and Aged Li- and Na-MnHCF Cathode by Synchrotron-Based Energy-Dependent Full Field Transmission X-ray Microscopy
Mariam Maisuradze, Min Li, Angelo Mullaliu, Andrea Sorrentino, Dino Tonti, Stefano Passerini, and Marco Giorgetti
In this article, we demonstrated the formation of charge state inhomogeneities inside the Manganese hexacyanoferrate cathode material via synchrotron-based transmission soft X-ray microscopy. Special image treatment procedure was adopted to highlight the heterogeneities on Fe and Mn oxidation state. The advantage of using Na-ion system over Li-one were detected.
