The application technologies of metal knitted nets in hydrogen production mainly include the following aspects:

As electrode materials for hydrogen production by electrolyzing water

• Enhancing conductivity and stability: Metal knitted nets have good electrical conductivity and chemical stability. For example, nickel wire knitted nets can be used as electrodes to conduct current in the electrolyzer, facilitating the occurrence of the water electrolysis reaction, and are not easily corroded in electrolyte environments such as strong alkalis.
• Increasing the reaction area: Its porous structure enlarges the contact area between the electrodes and the electrolyte, enabling more water molecules to react on the surface of the electrodes and improving the hydrogen production efficiency.
• Improving the adhesion: In the single-piece structure of some electrolytic water hydrogen production tanks, a knitted elastic net is set between the metal net and the electrode separator as an elastic pole piece, which can ensure that the electrode sheet is closely attached to the electrode separator, increase the contact area, and improve the production efficiency.

Used for gas separation and filtration in the process of hydrogen production

• Hydrogen separation: Metal knitted nets can be used to separate the mixed gases generated in the process of hydrogen production by electrolyzing water. They have good permeability to hydrogen, allowing hydrogen to pass through while blocking other gases, thus realizing the preliminary separation and purification of hydrogen.
• Impurity filtration: The gases generated in the process of hydrogen production may contain impurities such as water vapor, oxygen, and carbon dioxide. Metal knitted nets can be used as filters. Based on their pore size and surface characteristics, these impurities can be effectively filtered to further improve the purity of hydrogen.

As carriers for hydrogen production catalysts

• Loading catalysts: Metal knitted nets have a relatively large specific surface area. Catalysts such as Raney nickel and nickel-aluminum alloys can be loaded on their surfaces through processes such as plasma spraying, providing more active sites for the hydrogen production reaction, accelerating the reduction reaction of hydrogen ions, and thus increasing the hydrogen production reaction rate.