After manual dismantling of the pouch cell, the current collector was dissolved using sodium hydroxide (NaOH) in order to liberate the cathode material for leaching. While the Al current collector is lost through this approach, the reaction could potentially be used to generate hydrogen in line with current interest in hydrogen production from Al waste. Alternatively delamination processes such as those being developed in the ReLiB project offer the prospect of preserving and recycling this. However, in order to focus on the selective cathode dissolution processes, and to reduce potential Al contamination during regeneration/resynthesis, in this work the current collector was removed through dissolution and the remaining cathode material was filtered, washed and dried thoroughly before further treatment. The electrode containing the cathode phases was characterised using powder x-ray diffraction (PXRD) prior to any leaching (Figure ). The results show that the expected phases were present (LMO/ LO) after the hydroxide treatment. This is also supported by ICP-OES analysis, where the ratio of Mn:Ni:Co (supplementary S1) remained unchanged after dissolving of the current collector.