Nanostructured and nanoporous LiFePO4 and LiNi0.5Mn1.5O4-δ as cathode materials for lithium-ion batteries

Recent developments in the synthesis of nanostructured cathode materials are reviewed for the two prominent compounds LiFePO4 and LiNi0.5Mn1.5O4, and own results on LiFePO4 and LiNi0.5Mn1.5O4 with different microstructure are presented. The synthesis of LiFePO4 composites with porous carbons and the scale up of their synthesis is reported, as well as of nanoporous materials. In the case of LiNi0.5Mn1.5O4 the formation of deteriorating cathode surface films is studied with thin film electrodes and ToF-SIMS depth profiling.