The expanding market share of lithium-ion batteries (LIBs), driven by the secondary battery and electric vehicle markets, has consequently led to the accumulation of spent LIBs. This presents a unique business opportunity for recovering and recycling valuable metals from the spent lithium-ion cathode materials. Hydrometallurgical Recycling of Lithium-Ion Battery Materials provides a comprehensive review of the available hydrometallurgical technologies for recycling spent lithium-ion cathode active materials. The aim of this book is to raise awareness of LIB recycling, provide comprehensive knowledge of hydrometallurgical recycling of lithium cathode active materials, and promote an environmentally friendlier hydrometallurgical recycling process. Key Features Summarizes current recycling processes, challenges, and perspectives Offers a comprehensive review of current commercialized LIB recycling companies Showcases an innovative closed-loop hydrometallurgical recycling proces