In this study, a series of phosphatized pseudo-core-shell Ni@Pt/C electrocatalysts has been obtained for efficient hydrazine oxidation reaction (HzOR). These (Ni@Pt-P/C) electrocatalysts were prepared by a primary replacement method followed by subsequent phosphating process. Among all Ni@Pt-P/C electrocatalysts, as-prepared Ni@Pt-P/C-400 electrocatalyst shows the highest HzOR performance (515 mA mg(pt)(-1)), best stability, durability and lowest activation energy (12.60 kJ mol(-1)). The satisfactory HzOR performance is mainly resulted from the unique design of phosphating effect on core-shell structure which producing good synergistic effect between Ni, P and Pt. This work would pave a way for developing other low-Pt catalysts in the future. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.