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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Advanced Materials for Energy Conversion and Storage VI
Presentation Title Understand Behavior of Spinel Cathodes using Thermodynamic Modelling Technique
Author(s) Weibin Zhang, Dajian Li, Keke Chang, Yuan Yuan, Hans Jürgen Seifert
On-Site Speaker (Planned) Dajian Li
Abstract Scope Lithium-manganese oxide based spinel is attractive as cathode materials in lithium ion batteries (LIBs). The high-voltage (HV) spinels obtained by partially substituting Mn with other elements can provide even superior energy capacities and cyclability. However, due to a wide range of spinel solid solution and additional doping, it is extremely difficult to understand the intrinsic properties and evaluate the battery performance using the spinal cathodes. A complex CALPHAD (Calculation of Phase Diagrams) approach with special attention to describe the crystal structure as well as site occupations during spinel sintering and its applications is applied to systematically describe composition-structure-property-performance relationships for Li(-Ni)-Mn-O spinel cathodes. Depending on composition and crystallography, various properties relating key factors (cyclability, safety, and energy density) are quantitatively mapped and can be used as a guidance of cathode selection for LIBs. The current adopted research strategy enables efficient design of the new-generation multi-doped HV spinel Li(M,Mn)2O4.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

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