Recycling of electronic waste is a major application-driven research area in the Laboratory for Strategic Materials, where we integrate supercritical fluid extraction (SCFE) and hydrometallurgical processes to recover critical and valuable metals from end-of-life technologies. Our work addresses complex and heterogeneous waste streams with an emphasis on selectivity, efficiency, and environmental sustainability. We have extensively studied the recycling of NiMH batteries, NdFeB permanent magnets, and fluorescent lamps for the recovery of rare earth elements, as well as lithium-ion batteries (LIBs), including both NMC and LFP cathode chemistries, for the extraction of Li, Ni, Co, Mn, and other critical components. By combining advanced separation techniques with optimized chemical processing, our research contributes to the development of scalable recycling pathways that support circular economy principles and reduce dependence on primary mineral resources.