High-current water electrolysis performance of metal phosphides grafted on porous 3D N-doped graphene prepared without using phosphine

Development of efficient and stable electrodes for hydrogen oxygen evolution from water constituted abundant elements prepared by sustainable scalable procedures is considerable importance producing green renewable electricity. Herein, a method the preparation Ni 2 P, Fe FeP supported on N-doped graphene (NiP/NG FeP/NG) reported. The procedure uses metal salts, phosphorous oxide, chitosan as precursors phosphide graphene, avoiding use undesirable hazardous precursors, such PH 3 or NaH PO , rendering material with strong phosphide-graphene interaction. Moreover, NiP/NG FeP/NG are demonstrated to be more than benchmark catalysts Pt/C RuO reaction reaction, respectively, at large current density (300 mA/cm ). In addition, electrolysis was carried out using NiP/NG//FeP/NG electrodes, also demonstrating improved efficiency stability compared Pt/C//RuO (400 ) near industrial requirements. • Synthetic preparing phosphides toxic reagents creates interaction between support P x have been These can operate 400 50 h Transition promising but commonly phosphines. Here Hu et al. prepare consisting nanoparticles porous 3D catalyzing high