The growing demandDemand for lithiumLithium-ion batteriesBattery (LIBsLithium Ion Batteries (LIB)) for the electronic, automobile industries and energy storage combined with the limited natural resources of key elements on earth, in particular nickelNickel and cobaltCobalt, drives the need of efficient recovery these elements from spent LIBsLithium Ion Batteries (LIB). In this article, a comprehensive review of nickelNickel and cobaltCobalt recyclingRecycling technologiesTechnology from spent and scraps of LIBsLithium Ion Batteries (LIB), including hydrometallurgyHydrometallurgy and pyrometallurgyPyrometallurgy, and emerging approaches such as direct recyclingDirect recycling, biometallurgyBiometallurgy, electrochemistryElectrochemistry, and solvometallurgy were conducted. While conventional recyclingRecycling methods present environmental and efficiency challenges, direct recyclingDirect recycling, electrochemistryElectrochemistry, biometallurgyBiometallurgy, and solvometallurgySolvometallurgy show considerable promise in reducing energy consumption, minimizing the environmental impacts and attaining circular economy in LIB recyclingRecycling industry. Vigorous efforts are required to showcase the scalability, reliability, cost-effectiveness, and sustainabilitySustainability of emerging technologiesTechnology before commercialization.