[en] Full text: Recycling processes with industrial plants have been developed to treat spent lithium-ion batteries (LIBs) addressing environmental and economical sustainability to this waste. We have developed in our laboratory (Lab. FILMAT) two-step combined process to extract the active cathode material from its aluminum current collector. From our first-step process, powder of LiCoO₂ is extracted from the Al strip without chemical treatments (ME samples, in short). In a second step, chemical processing is applied to extract the cathode material that still bounded to the Al collector after the first processing (CE samples). We report physical and chemical characterization of the ME and CE powder compounds extract from cathodes of cell phone LIBs. Elemental analysis by x-ray fluorescence detected the presences of the LiCoO₂ (as matrix) in ME (99.44 % wt) and in CE samples V. Aluminum was present in CE samples (10.7 %) as an effect of sonic corrosion by ultrasound used in the chemical processing. Residues of Mn, Cr and P elements were also detected. From x-ray diffractograms LiCoO₂ and graphite were assigned to the ME samples. Graphite is mixed to LiCoO₂ powder to increase its electrical conductivity. CE samples showed the presence of LiCoO₂ , graphite and the LiAl_0.2 Co_0.8O₂ compound. Infrared spectroscopy on powder of CE samples detected chemical bounds ascribed to LiCoO₂ , dimetylfluoride (DMF) and to polyvinylidene fluoride (PVDF). DMF was employed in our chemical processing as solvent PVDF, a polymeric binder used to agglutinate the cathode powder particles and to bind them on the Al strip, providing mechanical strength to the electrode. SEM images of CE samples indicated that the chemical processing produces corrosion in the LiCoO₂ crystallites present in ME powder. (author)