Nickel fiber felt is manufactured in accordance with industry standards using micron-grade pure nickel fibers. The production process involves a special felt-laying technique and ultra-high-temperature vacuum sintering. In comparison to nickel mesh or nickel sintered porous plates, nickel fiber felt possesses a three-dimensional mesh porous structure, exhibiting advantages such as high porosity, large specific surface area, uniform pore size distribution, strong corrosion resistance, good water permeability, efficient heat dissipation, high current density, low voltage, stable performance, and extended service life. These exceptional qualities make nickel fiber felts highly suitable for diverse applications.

The wide-ranging utilization of nickel fiber felt spans industries such as fuel cells, military, aerospace, civil, and medical sectors. Notably, it finds application in hydrogen fuel cell diffusion media, specifically in the anode diffusion layer (GDL) of proton exchange membrane (PEM) water electrolysis.

Products Specifications

Material	Pure Nickel Fiber
Thickness	0.25–5 mm
Size	Customized upon request
Shape	Round, square, customized shapes, and filter elements
Porosity	50% – 90% (Customizable upon request)
Technique	Sintering

Products Features

High-temperature insulation material: Exhibits excellent thermal stability, withstanding temperatures up to 1000 °C without significant degradation. It also possesses corrosion resistance and favorable mechanical properties, making it suitable for harsh environments.

Catalyst carrier for various chemical reactions: The material's high surface area and porosity make it an effective substrate for the deposition of catalytic materials, enhancing reaction efficiency and selectivity.

Hydrogen fuel cell diffusion medium: utilized in proton exchange membrane (PEM) water electrolysis as an anode gas diffusion layer (GDL).

Versatile applications: Can be manufactured in different shapes and sizes and can be coated or impregnated with other materials to enhance specific properties.

Preparation Process

The fiber drawing process is crucial in the overall preparation. The adopted preparation technology, known as cluster drawing, offers advantages such as uniform wire diameter, easy continuous production, and cost-effectiveness. Numerous technical challenges associated with the cluster drawing process have been successfully addressed. Nickel fibers with wire diameters ranging from 6 μm to 40 μm can be produced to meet the specific requirements of different properties in nickel fiber mats.

Fiber shearing is conducted using a specialized cutting machine, enabling the fibers to be cut into various specifications, such as a length of 33 mm. This process ensures uniform shearing length and high production efficiency. The nickel fibers are then laid into a net using the air flow method, employing an imported felt laying unit. By adjusting complex process parameters, the resulting laid nickel fiber net exhibits uniformity and is free from defects such as bundled fibers and fiber agglomeration. The weight per unit area can be controlled as needed.

Application

Hydrogen production
Aerospace engineering
Medical and pharmaceutical sectors
Hydraulics and fuels
Nuclear emissions
Food and beverage industry
HEPA and ULPA filtration
Filtration of powders, polyamide, polypropylene, nylon, and more.