2results about How to "Excellent OER performance" patented technology

This invention relates to a low-spin Fe 3+ The preparation method of the iron-rich NiFe-LDHs electrocatalyst includes the following steps: (1) dissolving amino acids in an aqueous solution containing triethylamine to obtain solution A; (2) dissolving nickel salt and iron salt in a methanol solution to obtain solution B; (3) dissolving an organic base in a methanol solution to obtain solution C; (4) adding solution A to solution B and mixing to obtain solution D; then adding solution C to solution D to carry out a co-precipitation reaction, and finally centrifuging and vacuum drying to obtain the electrocatalyst. This invention uses amino acid pre-complexation and organic base micro-regulation to achieve an amino acid anion intercalation strategy. By utilizing the strong interaction between amino acids and the metal center of the layer, it not only suppresses the generation of impurity phases under high Fe content, but also expands the interlayer spacing and introduces lattice defects, inducing Fe in NiFe-LDHs. 3+ The spin configuration partially changes.

The invention provides a PTFE coupled nickel-based electrocatalyst and a preparation method and application thereof, an electrochemical deposition method is adopted to deposit deposition liquid on the surface of a conductive substrate, and the PTFE coupled nickel-based electrocatalyst is obtained; the deposition liquid is a mixed aqueous solution containing Ni < 2 + >, transition metal cations, a sulfur source and polytetrafluoroethylene. The PTFE coupled nickel-based electrocatalyst is synthesized through a simple one-step electrochemical deposition method; the PTFE coupled nickel-based electrocatalyst synthesized in the invention shows excellent HER performance and OER performance in alkaline electrolyzed water and alkaline real seawater, and can prevent Cl from permeating into active sites and base materials, so that CER generation and corrosive Cl erosion are inhibited, and the activity and stability of the material in alkaline seawater electrolysis are improved.