Li-ion batteries (LIBs) have high-density energy and outstanding cycle life that makes them great for electric vehicles (EVs). The growth in EVs adoption means imminent large amounts of lithium-ion battery waste will be generated. The need for recycled LIBs material is pivotal for the sustainability of the renewable energy industry. The recycling process needs to be both economically and environmentally conscious. Unlike Pyrometallurgical and Metallurgical processes, direct recycling is cheaper and generates the least amount of waste. Redox mechanism method for direct recycling is explored in this work to relithiate end-of-life (EoL) NMC622 cathode material. The quinone-based redox mediators used are 3,5-di-tert-butyl-o-benzoquinone (DTBQ) and 2,5-di-tert-butylhydroquinone (DTBHQ). The redox mediator is reduced in the reaction and EoL cathode material is oxidized. These compounds can shuttle the charges very fast between lithium metal and the EoL cathode material. Analysis and characterization of the relithiated EoL NMC622 cathode materials are carried out to compare with pristine NMC622 cathode material. This approach will potentially pave way for quality material recovery at a low cost. This project is part of ReCell which is a collaborative effort to develop efficient and economical recycle and reuse methods for EoL battery cathodes.