(FeaCobNic)xMyRz oxygen evolution catalytic material and application to anode oxygen evolution electrode

Abstract

The invention discloses a (FeaCobNic)xMyRz oxygen evolution catalytic material and an application to an anode oxygen evolution electrode. The atomic percent of the (FeaCobNic)xMyRz oxygen evolution catalytic material is that a plus b plus c is equal to 1, wherein a is larger than or equal to 0.5 and is less than or equal to 0.94, b is larger than or equal to 0.01 and is less than or equal to 0.9,c is larger than or equal to 0.5 and is less than or equal to 0.94, x is larger than or equal to 50 and is less than or equal to 95, y is larger than or equal to 5 and is less than or equal to 35, z is larger than or equal to 0.5 and is less than or equal to 15, M is one of or more than one of B, Si, C and P, and R is one of or more than one of Nb, Cr, Mn, Ru, Mo, Zr, Cu, Y and La. The (FeaCobNic)xMyRz oxygen evolution catalytic material is prepared into strips by adopting electric arc melting and induction melting so as to obtain alloy strips of which the thickness is 0.05 to 500 mum.(FeaCobNic)xMyRz is directly used as a working electrode to be applied to electrolyzed water, and the overpotential is 220 mV to 360 mV in the condition that the current density is 10 mA cm<-2>.

Description

technical field [0001] The present invention relates to a kind of electrode catalytic material in electrolyzing water to produce hydrogen, more particularly, refers to a kind of (Fe a co b Ni c ) x m y R z It is a preparation method of an amorphous alloy or an amorphous and nanocrystalline composite material and applies it to an oxygen evolution catalytic electrode for electrolysis of water to obtain high catalytic activity. Background technique [0002] Hydrogen production by water electrolysis is a relatively convenient method for producing hydrogen. Direct current is passed through the electrolytic cell filled with electrolyte, and water molecules undergo electrochemical reactions on the electrodes, decomposing into hydrogen and oxygen. [0003] In today's energy-shortage society, hydrogen energy is recognized as a green energy with great potential and an ideal secondary energy that can solve resource shortage and environmental pollution. Today, hydrogen is produce...

AI Technical Summary

Problems solved by technology

However, in the process of electrolyzing water, the electrode surface, especially the surface of the anode oxygen evolution electrode, will undergo polarization, causing the electrode reaction to deviate from the equilibrium electrode potential, thereby causing overpotential, which is the main reason for the high energy consumption and low efficiency of electrolyzed water.

The high price of traditional noble metal catalytic materials limits the industrial development of electrolyzed water, so non-noble metal materials have received more and more attention, and transition metal oxides, hydroxides, phosphides, sulfides, etc. have been extensively studied , but the catalytic activity of these materials still needs to be improved

Images