• Structural evolution and phase transitions during lithiation/delithiation in oxide cathodes revealed by in situ and structure-focused studies, highlighting order/disorder transitions and lattice responses across lithium cobalt oxide, lithium nickel oxide, and spinel manganese oxides. Evidence from in situ X-ray diffraction and related analyses shows how composition and lithium content steer phase stability [10], [14], [11], [3].

• Spinel lithium manganese oxide family emerges as a versatile cathode class: synthesis routes, defect spinels, and careful control of oxygen stoichiometry and composition to optimize cycling performance and capacity, as demonstrated by multiple studies on LiMn2O4 and related phases [3], [5], [6], [16], [13].

• Pursuit of high-energy oxide cathodes and end-members, illustrating high-voltage operation and phase behavior in lithium intercalation systems (e.g., lithium cobalt oxide family, lithium nickel oxide) and identification of end-member states in Li x CoO2; these works map the voltage landscape and structural evolution under high lithiation/delithiation voltages [2], [10], [11], [19], [12].

• Intercalation-based design with emphasis on electrolytes and interfaces, including rocking-chair configurations and surface-chemistry-driven performance of lithium-carbon intercalation anodes, highlighting how electrode–electrolyte interfaces govern cycle life and coulombic efficiency in practical cells [4], [18], [1].