Executive Summary : | Digital transformation and e-vehicles markets are expected to grow at a CAGR of 19 and 90 respectively, requiring uninterrupted rechargeable batteries. Li-ion batteries, which are widely used, generate waste due to their high voltage, energy density, and long cycle life. This waste poses a threat to the environment and human health due to heavy metals and electrolytes. Safe disposal of spent batteries is crucial, as they contain critical raw materials like cobalt, nickel, manganese, and lithium. Sustainable recycling methods can mitigate supply risks and minimize environmental issues. The proposed study aims to develop a green technology for recovering critical metals from spent batteries, contributing to the circular economy of these precious metals. The technology uses hydrometallurgical tools and involves roasting, leaching, electrowinning, solvent extraction, precipitation, and crystallization techniques. The process has been developed in batch scale at the Environmental lab of SRM-AP, but further testing is needed for up-scale validation and transferability to industries. The technology aims to repurpose spent batteries into high-performance electrode materials, promoting sustainable and cost-effective growth of lithium-ion batteries. The project will involve collection and segregation of spent batteries, mechanical dismantling, pilot-scale hydrometallurgical operations, and life-cycle analyses. |
Co-PI: | Dr. Pardha Saradhi M, SRM University, Amaravati, Andhra Pradesh (522240), Dr. Sujith Kalluri, SRM University, Amaravati, Andhra Pradesh (522240) |