▎ 摘　　要

The development of superior supporting materials supported surface-engineered metallic nanocrystals is desired and necessary for promoting the electrocatalytic performance of ethanol electroxidation. Additionally, the facile and mild synthetic strategy for advanced electrocatalyst is also urgently needed. Herein, a new catalyst comprising of phosphorus low-doping palladium nanoalloys uniformly anchored on the three-dimensional nitrogendoped graphene (denoted as Pd-P/3DNGS) is synthesized by a facile one-pot surfactant-free hydrothermal method. Notably, the optimized Pd-P/3DNGS-2 displays an inspiring enhanced electrochemical behavior to ethanol oxidation in terms of catalytic activity, accelerated kinetics, improved long-term stability and boosted anti-poisoning capability, which may be derived from the unique architecture of 3DNGS and the providential electron effect between Pd and P. This work provides a new access for rational design of nano-electrocatalysts.