Phosphonium shuttle effect mechanism proposed in.[102]The [P](eFAP-) complex is able to transport a proton from the anode of the electrolytic cell, where HOR happens and H2is oxidized into H+, which reacts with the phosphonium cation forming the ylide, subsequently migrated to the cathode, where H+is essential to protonate Li3N into NH3and Li+. Adapted and reprinted with permission from.[102]