The use of batteries in the electronics, automobile, and chemical industries is growing rapidly worldwide. The portability, high energy density, and low maintenance needs of batteries eliminates the need for transportation or reticulation of power. However, battery technologies suffer from a limited life span, which results in a need for frequent replacement. The generation of large quantities of battery waste has created a need for an effective management strategy to safely treat and recover valuable resources used in battery manufacturing. This review covers current issues in battery waste management, including a description of the advantages, limitations, challenges, and economical feasibility of various treatment technologies. Future perspectives are also discussed to encourage research on imminent environmental issues associated with batteries.

Electrical and electronic equipment with axillaries at their end of life are considered as e-waste. Utilization/reutilization of e-waste especially recovery of rare earth metals from e-waste has engrossed great attention in last decades. In this line, here we are reporting a process for utilizing spent lithium-ion mobile batteries as a source of Co metal ions (in the form of cobalt oxalate through acid leaching) for wZIF-67 (waste mobile battery-based ZIF) synthesis at certain experimental conditions. Afterward, a comparative analysis was carried out based on structure and properties between wZIF-67 [Co metal ions from waste mobile battery and 2-methylimdazole (Hm-im) based ZIF] and pZIF-67 [cobalt(II) nitrate hexahydrate-based ZIF 2-methylimdazole (Hm-im) based ZIF]. Our results indicated that, wZIF-67 has almost analogous features and is possibly utilized for gas storage and separation, sensing, catalysis and energy applications in future.