Nanoporous al-ni-m-re-r amorphous alloy used as hydrogen evolution catalytic electrode and preparation method thereof

Abstract

The invention discloses a nanoporous Al-Ni-M-RE-R amorphous alloy used as a hydrogen evolution catalytic electrode. The transition metal element M is Fe, Co, Cr, Cu, and the rare earth element RE is Y, La, Gd, Ce, noble metal R are Pt, Ru, Pd, Rh, Au, Ir. A hydrogen evolution catalytic electrode whose mass percentage composition is Al-(2~12%)Ni-(1~13%)M-(2~13%)RE-(0.2~7%)R, using galvanostatic method, corrosion method or The pulse corrosion current method makes the nanoporous amorphous alloy have a stable structure, a large specific surface area, adjustable composition, structure and morphology, and high catalytic activity; when used as a catalytic electrode for electrolysis of water and hydrogen evolution, 10mA·cm ‑2 Under the current density, the hydrogen evolution overpotential is 40-65mV, and the Tafel slope is 10-60mV / dec, indicating that the nanoporous amorphous alloy hydrogen evolution electrode has excellent hydrogen evolution catalytic activity.

Description

technical field [0001] The present invention relates to a hydrogen evolution catalytic electrode, more particularly, refers to a nanoporous Al-(2~12%)Ni-(1~13%)M-(2~13%)RE-(0.2~ 7%) hydrogen evolution catalytic electrode of R amorphous alloy. Background technique [0002] As a clean energy that can replace fossil fuels, hydrogen energy will have huge advantages in future energy consumption. At present, the preparation technologies of hydrogen energy mainly include: hydrogen production from fossil fuels, hydrogen production by photolysis of water, and hydrogen production by electrolysis of water. Among them, hydrogen production by electrolysis of water is a clean technology that can be applied to large-scale industrial production, and has the advantages of abundant raw material sources and high purity of gas production, so that more and more researchers have begun to devote themselves to research in this area. [0003] An excellent hydrogen evolution catalyst needs to have ...

AI Technical Summary

Problems solved by technology

Due to the instability of the porous structure at the nanometer scale, it is often difficult to prepare nanoporous structures for metals with more active physical and chemical properties. Palladium (Pd), platinum (Pt)) and nanoporous nickel (Ni), copper (Cu), titanium (Ti) and other metals with relatively stable physical and chemical properties, and reports on chemically active metal nanoporous materials such as aluminum (Al) rarely

Images