Fig. 3: Electrochemical performance of A-NiCoMn-TAC/LDH.

a LSV curves of NiCo-LDH and A-NiCoMn-TAC/LDH-1, 2, 3, 4 in 1 M KOH and 0.33 M urea. b Comparison of OER and UOR performance of A-NiCoMn-TAC/LDH at 50 mA cm−2. c Radar chart for comparison of comprehensive catalyst performance of samples. d Stability test of A-NiCoMn-TAC/LDH at an industrial current density at 500 mA cm−2 for 600 h.