Understanding energy storage and charge transport mechanisms of halide-based cathode materials via XAS
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https://doi.esrf.fr/10.15151/ESRF-ES-2064077419
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We recently proposed amorphous Fe-based and V-based high ionic conductivity halide cathode materials, which can cycle at room temperature without the additional catholyte. Both halide cathode materials present multi-electron transfer reactions for lithium storage, as well as rapid ionic transport characteristics. To investigate redox reaction mechanism of Fe-based and V-based halide cathode materials, X-ray Absorption Spectroscopy (XAS) experiments are significant to investigate the changes in the valence states and the evolution of local coordination environment of the transition metal in amorphous materials. X-ray Absorption Near Edge Structure (XANES) and Extended X-ray Absorption Fine Structure (EXAFS) spectra will confirm the valence state changes of Fe/V species and illustrate how Fe/V atoms coordinate with halide atoms. These results will provide an in-depth understanding of the synthesis and properties of halide cathode materials and may stimulate research in related fields.
提供机构：
Dalian Institute of Chemical Physics, CAS, Dalian National Laboratory for Clean Energy, 457 Zhongshan Road, 116023 , Dalian, CN; University of Oxford, Department of Engineering Science, Parks Road, Oxon, Ox1 3pj Oxford, United Kingdom; University College London, UCL department of Chemistry, Christopher Ingold Building 20 Gordon Street London, WC1H 0AJ, London, GB; University of Oxford, Department of Engineering Science, Parks Road Oxon, OX1 3PJ, Oxford, GB; Cardiff University, Cardiff Catalysis Institute, School of Chemistry, CF10 3AT, Cardiff, GB
创建时间：
2028-01-01
