LINQCELL CAT-NiMoAl

Harmonization Code : 7508.10.00.00 | Cloth, grill and netting, of nickel wire

Main features

Low overpotential for hydrogen evolution reaction
Platinum-group metal (PGM)-free catalyst
Optimized as cathode for alkaline water electrolyzers

Product Description

LINQCELL CAT-NiMoAl is a nickel-based electrode with nickel alloy catalyst layer deposited through plasma spray coating. It registers low overpotential for the hydrogen evolution reaction (HER), the cathodic reaction in electrochemical water splitting. While platinum is traditionally used to catalyze HER, its scarcity and high cost make transition metals like nickel strong alternatives. Nickel, in particular, demonstrates exceptional catalytic activity in alkaline solutions. CAT-NiMoAl is an improved version based on a ternary nickel–molybdenum–aluminum alloy, offering performance comparable to that of the benchmark platinum electrode, making LINQCELL CAT-NiMoAl a reliable, cost-effective, and high-performance cathode for alkaline water electrolyzers.

Key Features:

Strong Catalytic Activity: The cathode demonstrates strong catalytic activity for the hydrogen evolution reaction (HER), crucial for efficient water splitting. This version is comparable to platinum.
Excellent Stability: The cathodes have maintained their coating adhesion, voltage, and overall performance after 1000 hours of testing under a constant current of 10000 A/m².
Cost-Effective Alternative to Platinum: By using nickel-based alloys and a nickel alloy catalyst layer, the LINQCELL CAT-NiMoAl provides a more affordable solution compared to traditional platinum-based catalysts.

Highly Recommended for:

Alkaline water electrolyzers, specifically as cathode for hydrogen production.

LINQCELL CAT-NiMoAl comes in different sizes to meet various device design requirements. Contact us for custom sizes or other specific requirements.

Specifications
Additional Information

Technical Specifications

Additional Information

LINQCELL CAT-NiMoAl Properties

Property	Value	Test Method / Conditions
Hydrogen Evolution Reaction Performance	\|Current\| at –1.5 V > 1.2 A	Linear sweep voltammetry/ –1.5 to –0.3 V vs. Hg/HgO
Mechanical Stability	Weight loss < 1%	Ultrasonication / 120 W, 60 min
Electrochemical Stability	Performance decay <2% \|Current\| at –1.5 V > 1.2 A	Cyclic voltammetry/ –1.5 to –0.3 V vs. Hg/HgO (200 cycles) at 30% KOH, 30 (±1)°C

Woven Mesh Substrate Options for LINQCELL CAT-NiMoAl

Mesh 4019

Mesh 4619

Mesh 4625

What Does Woven Mesh Nomenclature, like “4619”, Mean?

Woven mesh nomenclature defines the structure of a mesh using two key parameters: mesh count and wire diameter. The mesh count refers to the number of openings per linear inch (for example, “46” means 46 wires per inch), while the wire diameter indicates the thickness of each wire, typically measured in millimeters or inches (for instance, “19” corresponds to a 0.019 mm or 0.0019 in wire). These values determine critical properties such as aperture size, open area, and mechanical strength. For example, a woven mesh labeled 4619 represents a mesh with 46 openings per inch made from 0.019 mm diameter wires, resulting in a fine, uniform structure ideal for filtration, screening, and electrochemical applications.

CAPLINQ’s nickel wire meshes, NWM250 and NWM300, on the other hand, have 0.25 mm (250 µm) and 0.30 mm (300 µm) wire diameter, providing excellent electrical conductivity, corrosion resistance, and durability for electrochemical and high-temperature environments.

High-Rigidity Nickel Substrates for NiMoAl Cathode Catalysts

High-rigidity nickel substrates are critical for the stable performance of NiMoAl cathode catalysts in alkaline water electrolyzers. CAPLINQ can also provide customized nickel perforated sheets with round openings and expanded nickel sheets with diamond openings engineered for high mechanical strength and dimensional stability under compression. These rigid supports ensure uniform current distribution, low contact resistance, and efficient gas removal, improving both the durability and efficiency of NiMoAl-based cathodes in alkaline environments.