Lithium (Li) has been known for possessing excellent electrochemical performance due to its growing use in energy-related applications such as lithium-ion batteries (LIBs). End-of-life LIBs are usually recycled through a leaching process that yields a solution known as LIB leachate that contains lithium and other LIB materials. The electrochemical technique, which generally uses lithium-manganese oxide (LMO) electrodes, is one of the promising techniques for selectively recovering lithium from the LIB leachate. However, the stability performance of LMO is poor, mainly due to the Jahn-Teller effect of Mn3+ in LMO. In this study, substituting with nickel dopant was used to reduce the manganese content of LMO. Lithium was selectively recovered from actual LIB leachate using lithium nickel manganese oxide (LNMO) and activated carbon (AC) electrodes. The effects of operation time and current on lithium recovery …