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Email: dzx@dlx-alloy.com
Add: NO.32 West Taihu Road, Xinbei District, Changzhou, Jiangsu

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Pure Nickel Electrode Mesh — System-Level Component Design for Electrolyzer Stack Integration

Pure Nickel Electrode Mesh — System-Level Component Design for Electrolyzer Stack Integration

Product Attributes: N4 N6 Ni200 Ni201

Certificates: ISO9001 CE RoHS

Customization available based on provided drawings and samples.

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Product Detail

Pure Nickel Electrode Mesh — System-Level Component Design for Electrolyzer Stack Integration

ISO9001 Factory Direct | Since 2002 | N4/N6/Ni200 | System-Optimized | 3-7 Day Trial Ship

An electrode mesh specification written in isolation — "40 mesh, 0.25 mm wire, N6" — ignores everything that happens around the mesh in a working electrolyzer stack. It ignores the way the mesh compression affects gasket thickness selection. It ignores how mesh thermal conductivity influences the lateral temperature distribution across the active area. It ignores how mesh open area interacts with the manifold pressure drop to determine flow uniformity across a 1-meter cell. At Jiangsu DZX Alloy Co., Ltd., we treat electrode mesh as a system component — not a standalone item. We review how your mesh specification interacts with your gasket design, your compression system, your flow manifold, and your thermal management strategy. Sometimes the mesh specification is correct and the surrounding design needs adjustment. Sometimes the surrounding design is correct and the mesh specification is creating unintended consequences. We find those interactions before you build a stack — not during end-of-line testing.

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System Interaction	How Mesh Affects It	What Happens If This Interaction Is Ignored
Gasket compression set	The mesh sits inside the gasket frame. Its compressed thickness determines whether the gasket is under-compressed (leaks) or over-compressed (extruded into flow channels).	Stack designer specifies gasket thickness assuming mesh nominal thickness. Mesh actual thickness under load is 0.05 mm less than nominal. Gasket is under-compressed by 0.05 mm. At 30 bar operating pressure, the stack leaks electrolyte at the gasket interface.
End plate bolt load distribution	Mesh compression stiffness is non-linear. The first 10% compression requires low force; the next 10% requires exponentially higher force. This non-linearity interacts with end plate deflection under bolt load.	Bolts at the four corners of the end plate are torqued equally. The end plate bows — compression is higher at the center cells than the edge cells. Edge cells are 0.03 mm thicker than center cells after compression. Edge cell performance drifts separately from center cell performance. Stack diagnostic data shows a spatial pattern that takes weeks to trace back to the mesh compression non-linearity.
Lateral thermal conductivity	The mesh is a continuous nickel network in the plane of the electrode. It conducts heat laterally from hot spots to cooler regions. The in-plane thermal conductivity depends on mesh type (woven vs expanded), strand cross-section, and contact resistance at wire intersections.	A cell develops a 5°C hot spot near the outlet manifold where gas fraction is highest. If the mesh has good lateral thermal conductivity, the hot spot spreads and the peak temperature is 2°C above average. If the mesh has poor lateral conductivity (thin expanded mesh with narrow strands), the peak temperature is 8°C above average. At 8°C above average, local current density increases 15% — accelerating local degradation and creating a runaway feedback loop.
Flow distribution across the cell	The mesh is the primary flow resistance in the electrode gap. Its permeability — determined by wire diameter, mesh count, and weave pattern — controls how evenly electrolyte distributes from the inlet manifold across the full cell width.	Mesh permeability is too low relative to manifold pressure drop. Electrolyte flow is concentrated in the first 20 cm from the inlet — the far side of the cell is starved. Current density at the inlet is 20% higher than the outlet. The electrode degrades faster at the inlet. Replacement is required not because the average degradation reached end-of-life — but because the inlet region failed prematurely.
Electrical contact resistance at the bipolar plate interface	The mesh contacts the bipolar plate at discrete points — wire knuckles for woven mesh, strand surface for expanded mesh. The number of contact points per cm² and the contact pressure at each point determine the interfacial resistance.	Stack designer models the mesh-to-plate interface as a continuous area contact with bulk nickel resistivity. Actual resistance is 2–3× higher due to discrete contact points. Cell voltage is 15–25 mV higher than the model predicted. The stack efficiency warranty is at risk — not because the mesh is defective, but because the electrical contact model did not account for the actual contact geometry.

How We Help You Get the System Interaction Right — Before the Stack Is Built

Interaction	What We Can Provide	How You Use It
Compression behavior	Load-vs-deflection curve for your specific mesh specification, measured at operating temperature (80–90°C) in a heated compression fixture. Data includes loading and unloading curves (hysteresis).	Input the curve into your stack mechanical model. Verify that gasket compression remains within the gasket manufacturer's recommended range across all cells — accounting for mesh thickness tolerance, gasket thickness tolerance, and end plate deflection.
In-plane thermal conductivity	Effective in-plane thermal conductivity measured by guarded hot plate method on mesh compressed to your stack pressure. Report includes conductivity at 25°C, 60°C, and 90°C.	Input the conductivity into your cell thermal model. Verify that the predicted lateral temperature distribution does not create hot spots exceeding your membrane or diaphragm temperature limit. If hot spots are predicted, consider increasing mesh strand cross-section to improve lateral conduction.
Through-plane permeability	Pressure drop vs flow rate measured with water at 25°C across a mesh sample compressed to your stack pressure. Report includes permeability coefficient (Darcy or Forchheimer model).	Input the permeability into your CFD model of the cell flow field. Verify that flow maldistribution across the cell width does not exceed your acceptable threshold (typically <10% variation). If maldistribution is predicted, adjust mesh open area or mesh count.
Contact resistance	Electrical resistance measured across a mesh sample sandwiched between two nickel plates at your stack compression pressure. Measurement separates bulk mesh resistance from contact interface resistance.	Input the contact resistance value into your cell voltage model. Verify that the total interfacial voltage drop across all mesh-to-plate interfaces in the stack does not exceed your voltage budget. If it does, consider trapezoidal expanded mesh (more contact area) or increased compression pressure.

System characterization package: For customers developing new stack designs, we offer a characterization package covering all four interactions above on your specified mesh. The data package is typically delivered within 3–4 weeks of receiving your mesh specification and stack design parameters. This is not a standard catalog service — it is engineering support for stack development programs.

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We review the system, not just the spec — When you send us a mesh drawing, we ask about your gasket thickness, your compression pressure, your manifold geometry, and your cell active area dimensions. These questions sometimes reveal interactions that the stack design team has not yet modeled. Finding them at the mesh specification stage costs nothing. Finding them during stack end-of-line testing costs a teardown and a redesign cycle.
Compression behavior data — not an assumption — Many stack mechanical models assume the mesh compresses as a linear elastic spring: F = kx. Nickel mesh under compression does not behave this way. The first 5–10% compression is low-stiffness as wire intersections settle. The next 5% is higher-stiffness as the wires themselves compress. Beyond 15%, the stiffness increases sharply. This non-linear behavior affects every downstream calculation: gasket compression, bolt torque, end plate deflection. Our measured compression curves replace the assumption with data.
Measured contact resistance — not bulk resistivity × thickness — A common modeling shortcut: take the bulk resistivity of pure nickel (~7 × 10⁻⁸ Ω·m), multiply by mesh thickness, divide by the apparent contact area, and call it the interfacial resistance. This underestimates actual resistance by a factor of 2–4× because it ignores the discrete nature of mesh-to-plate contact. Our four-wire resistance measurement across compressed mesh directly quantifies the contact contribution — giving your voltage model the correct input.
Thermal and flow characterization — data that your CFD model needs — CFD models of electrolyzer cells require mesh permeability and thermal conductivity as inputs. Assuming "similar to a porous nickel foam" or "similar to wire screen correlations from the literature" introduces unknown errors. Our direct measurements on your actual mesh specification at your actual compression pressure eliminate these assumptions.
Same mesh, same facility, same quality system — characterization data that stays valid — The compression curve, thermal conductivity, permeability, and contact resistance we measure on your qualification batch remain valid for your production batches because the mesh is manufactured in the same facility using the same process. No supplier migration. No re-characterization required.
Dedicated to nickel — the characterization fixtures are nickel, too — Our compression and contact resistance test fixtures use nickel platens — not stainless steel. Nickel-on-nickel contact resistance measurement gives you the value that represents the actual stack interface. Stainless platens introduce a dissimilar-metal contact potential that corrupts the measurement.

About DZX — Nickel Specialists Since 2002

Jiangsu DZX Alloy Co., Ltd. was founded in 2002 and has never manufactured anything other than nickel alloys. This singular focus matters in ways that are not obvious until you need engineering data on a material that your supplier actually understands. When you ask DZX for the compression behavior of a 40-mesh N6 woven mesh at 1.5 MPa and 85°C, the engineer who designs the test fixture has spent 20 years working with nickel. They know that pure nickel begins to creep measurably above 80°C under sustained compression — so the test must include a creep relaxation component, not just a single loading curve. They know that the mesh must be annealed before testing to eliminate the forming history that would otherwise produce a compression curve unrepresentative of the mesh in your stack. These are not things you find in a test standard. They are things you learn by doing.

12,000 m² nickel-only facility — melting, drawing, rolling, weaving, expanding, annealing, and characterization under one roof. No cross-material contamination. No generic test protocols applied to a material the lab doesn't understand.
System characterization capability — compression (load-deflection + creep), in-plane thermal conductivity, through-plane permeability, and electrical contact resistance. Measured on your mesh at your stack conditions.
ISO9001 with full melt-to-mesh traceability. SGS-accredited. Data-driven manufacturing with SPC on critical parameters.

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Chemistry certified from ingot through finished mesh. Select grade based on system requirements — not only purity but also carbon control for elevated-temperature applications.

Element (%)	N4	N6	Ni200	Ni201
Ni+Co	≥99.9	≥99.5	—	—
Ni	—	—	≥99.2	≥99.0
Fe	≤0.04	≤0.1	≤0.4	≤0.4
Cu	≤0.015	≤0.1	≤0.25	≤0.25
C	≤0.01	≤0.1	≤0.15	≤0.02
Si	≤0.03	≤0.1	≤0.35	≤0.35
Mn	≤0.002	≤0.05	≤0.35	≤0.35
S	≤0.001	≤0.005	≤0.01	≤0.01

Product Specifications

Mesh types	Woven (plain, twill, Dutch), expanded metal, corrugated (sinusoidal, trapezoidal)
Wire diameter (woven)	0.10–0.80 mm
Sheet thickness (expanded)	0.15–0.50 mm
Mesh count	10–200 wires/inch (woven); custom LWD/SWD (expanded)
Sheet dimensions	Custom L × W — cut to cell frame with manifold openings per drawing
Post-treatment	Solution annealed, bright annealed, surface conditioned (Ra-specified)
System characterization	Compression curve, thermal conductivity, permeability, contact resistance — optional, per request

Quality Assurance

Attribute	Standard Verification	System Relevance
Chemistry	OES per ingot; PMI per production lot	Chemistry affects every system interaction — Fe dissolution affects electrolyte conductivity over time; C content affects microstructure stability at elevated temperature
Dimensional	Wire: laser micrometer per spool. Mesh count: optical per sheet. Sheet L × W: steel rule per sheet.	Dimensional variation creates compression variation — which creates gasket compression variation — which creates leak paths
Flatness	Granite surface plate; deviation recorded	Non-flat mesh under compression = uneven pressure distribution = uneven current density = accelerated local degradation
Surface	Water break test per lot; visual at 5×	Surface contamination dissolves into electrolyte, increases resistance, and potentially poisons catalyst coatings
Annealing verification	Grain size ASTM E112; equiaxed structure confirmed; hardness per lot	Work-hardened mesh creeps faster than annealed mesh under compression — compression relaxation rate is annealing-history-dependent
Documentation	EN 10204 3.1 MTC + dimensional report + grain size + surface cert + characterization data (if requested)	System characterization data supports your stack design verification and your customer's technical due diligence

Third-party verification by SGS, BV, or TÜV. System characterization data package available for stack development programs.

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Sheet protection	Interleaved with acid-free tissue. Stacked flat between rigid backing boards. Sealed with desiccant in barrier packaging. Surface remains water-break-passing at your receiving inspection.
Crating	Flat-packed in seaworthy plywood crate. Internal bracing prevents sheet movement. Crate designed to maintain flatness protection through transit and handling.
Identification	Grade, ingot heat number, mesh specification, sheet dimensions, lot number, DZX traceability code. System characterization data reference included where applicable.
Sample MOQ	5 sheets for specification evaluation. System characterization available on sample quantity.
Production MOQ	50 sheets per specification.
Lead Time	2 weeks trial with stock wire; 4–6 weeks custom wire + characterization. System characterization adds 3–4 weeks to trial timeline.
Shipping	Air for trial; sea for production. Barrier packaging validated for 6-week ocean transit with flatness and surface preservation.
Payment	T/T for trial; T/T or L/C at sight for production.

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At what point in our stack development should we request system characterization?

Ideally, after you have a preliminary mesh specification and a preliminary stack mechanical design — but before you build the first full-scale stack prototype. This timing allows the characterization data (compression curve, thermal conductivity, permeability, contact resistance) to feed into your detailed design models. Adjusting gasket thickness or bolt torque based on measured mesh compression data costs an afternoon of engineering time. Adjusting it after the first stack prototype leaks electrolyte costs a teardown and rebuild.

How long does the characterization take, and does it delay mesh delivery?

Characterization runs in parallel with mesh production or on samples from the same production lot. Compression and contact resistance measurements are completed within 1–2 weeks. Thermal conductivity and permeability measurements require specialized fixtures and are typically completed within 3–4 weeks. The characterization data package is delivered as an addendum to the MTC — it does not delay the physical mesh shipment unless you request that we hold shipment until characterization is complete.

Can you characterize mesh that was manufactured elsewhere — for comparison?

Yes. If you are currently using a competitor's mesh and want to compare its system-level properties (compression, thermal, permeability, contact resistance) against DZX mesh of the same specification, we can run the characterization on both samples. This is a common request during supplier qualification. Both samples are tested on the same equipment under the same conditions — the comparison is directly valid.

Does the characterization data change if we switch from N6 to N4?

Compression behavior, thermal conductivity, permeability, and electrical contact resistance are primarily determined by mesh geometry (wire diameter, mesh count, weave pattern) and annealing condition — not by the difference between 99.5% and 99.9% nickel purity. If you change grade but keep the same mesh geometry and annealing, the characterization data remains valid. The grade change affects electrochemical behavior (iron dissolution rate, overpotential drift) — which is a separate analysis from the system-level mechanical and transport properties.

What if our stack uses a bipolar plate material other than nickel?

The contact resistance measurement and thermal conductivity measurement are valid for the mesh itself regardless of plate material. However, the mesh-to-plate contact resistance depends on both materials. If your bipolar plate is stainless steel, titanium, or coated metal, we recommend measuring contact resistance with your actual plate material. We can run the measurement with customer-supplied plate samples — contact us to arrange.