The LMO in solution can then be reformed from the acidic solution via heat treatments. The recovered LMO forms the desired spinel phase (Figure , space group Fd3 ̅ m) without the presence of any impurity phases. It has a lattice parameter of 8.2019(5) Å which is similar to the literature and suggests that there is no significant Li/Mn deficiency within the structure. Figure shows the cycling performance of the recovered LMO. The voltage profile looks as expected however it displays a low specific discharge capacity of 89 mAh g -1 . This capacity is lower than commonly reported in the literature for LMO, which may be due to the presence of small amounts of additional metals noted above. Given this fact, and the fact that LMO is no longer commercially used, we therefore investigated upcycling into next generation cathodes. The recovered LMO can then be used as a reagent to form other, higher performing, Mn containing cathode materials. This provides a method for the recovered LMO to be utilised in an upcycling application. In this example, the solution containing Li and Mn is instead used as a starting material in the synthesis of LMNO rather than recovering LMO. LMNO is of interest as it has a higher operating voltage than LMO and therefore increases the cell energy. It has also been suggested as a cathode to increase the voltage of higher power batteries. XRD patterns show that the desired spinel phase (space group Fd3 ̅ m) has formed (Figure ). There are also peaks at 43.8, 51.0 and 75.1° which are due to a small amount of LixNi1-xO (6.02 wt%). LixNi1-xO is a common impurity for LMNO and it is usually formed when the synthesis is performed at higher temperatures, as this results in a decrease in the Ni solubility within the spinel structure. The LMNO has a lattice parameter of 8.1587(3) Å which is similar to the literature.