Operando study of high-voltage positive electrode spinel materials Li1Ni0.5-xMn1.5-yO4-z for lithium-ion batteries
Three different samples of spinel LiNi0.5Mn1.5O4 used as high-voltage positive electrode materials for next generation of Li-ion batteries have been selected because they show distinct electrochemical performance. Although their XRD patterns are very similar, such differences in their electrochemical properties are probably related to structural features (off-stoichiometries, metal ordering, antiphase boundaries, antisite defects, etc) which will be better characterized from their NPD patterns. From this operando NPD experiment, we aim here at understanding the differences in their reaction mechanism and establishing the correlations existing between composition, (micro)structure and electrochemical properties of these spinel materials, which are attracting strong interest as being one of the best candidate to replace cobalt-based cathodes in the next generation of Li-ion batteries developped by the European Community.
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Marine REYNAUD; AYAPE KATCHO Nebil; Caņadillas-Delgado, L.; CASAS CABANAS Montserrat; FEHSE Marcus; I. Monterrubio and SUARD Emmanuelle. (2021). Operando study of high-voltage positive electrode spinel materials Li1Ni0.5-xMn1.5-yO4-z for lithium-ion batteries. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-23-765
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