Defect CTF derived Ru-based catalysts for high performance overall water splitting reaction

Research on water-splitting electrocatalysts is crucial to establishing a solution to the energy crisis. Herein, we report a facile bottom-up strategy for the preparation of high performance supported electrocatalysts for overall water-splitting reaction via a rationally designed defect covalent triazine frameworks (CTFs) support. Specifically, defect CTFs are obtained via binary-precursor polymerization, followed by loading Ru nanoparticles (Ru/D-CTFs-900) with high HER performance at a current density of 10 mA cm −2 . The overpotential is only 17 mV. Calcination of the resultant Ru–RuO 2 /D-CTFs-300 in air, produces excellent OER performance with 190 mV overpotential (at 10 mA cm −2 ). Furthermore, overall water splitting measurements reveal the potential of 1.47 V, which is better than the majority of the reported Ru-based catalysts. Moreover, density functional theory calculation results show that excellent electrocatalytic properties are attributed to the synergistic effect of Ru nanoparticles and carbon support.