We have designed and tested several synthesis routes targeting a highly fluorinated disordered rocksalt (DRX) cathode, Li1.2Mn0.4Ti0.4O1.6F0.4, with each route rationalized by thermochemical analysis. Precursor combinations were screened to raise the F chemical potential avoid formation of LiF, which inhibits fluorination targeted DRX phase. MnF2 was used as reactive source F, Li6MnO4, LiMnO2, ...

Spinel oxides of Li[LiyTi2-y]O4 with 0 ≤y≤ 1/3 exhibit two desirable features for solid state chemistry and condensed matter physics. One is a reversible lithium insertion/extraction reaction, in particular for Li[Li1/3Ti5/3]O4, and the other is a superconducting transition at Tc≃ 13 K for Li[Ti2]O4. To study the change in magnetic environments of the y = 1/3 compound with excess Li(x), we meas...

The degradation of lithium-ion cells is an important aspect, not only for quality management, but also the customer application like, e.g., scooters or electric vehicles. During lifetime system, overall health on battery plays a key role in its depreciation. Therefore, it necessary to monitor during operation, i.e., cycle life, stationary conditions, calendar aging. In this work, due aging anal...