Name: Iridium-Free NiFe Anode for AEM Water Electrolysis – HXP-an
Availability: InStock

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HXP-an — NiFe-LDH grown directly where oxygen evolution happens

An AEM electrolysis anode that replaces iridium with a directly grown NiFe catalyst layer on nickel foam.

HXP-an is built by growing NiFe layered double hydroxide in situ on a porous nickel-foam substrate. The architecture combines the OER catalyst and transport structure in one electrode, with formats for stack integration and laboratory evaluation.

No iridium
NiFe-LDH oxygen-evolution catalyst

≈25×
BET surface area versus untreated Ni foam

200 × 300 mm
Standard stack-grade format

10,000 cycles
Accelerated stress test completed

01 — The catalyst is grown on the transport structure

Catalyst

NiFe layered double hydroxide for oxygen evolution.

Substrate

Nickel foam · 130 ppi · 95–98% porosity.

Fabrication

In-situ growth on the Ni-foam substrate, rather than assembly as a separate free-standing layer.

Observed catalyst layer

Approximately 200 nm in cross-section TEM.

02 — Choose the format by the work

Stack grade

200 × 300 mm · nominal 3 mm · quality reference 3.0 ± 0.2 mm

Laboratory evaluation

100 × 100 mm · nominal 300 µm · quality reference 300 ± 20 µm

Custom production

Custom size and thickness can be reviewed against cell design, active area, compression and availability.

03 — Measured against untreated nickel foam

Tafel slope

98.7 mV/dec for HXP-an versus 184.0 mV/dec for untreated Ni foam.

OER current at 1.89 V

168 mA for HXP-an versus 53 mA for untreated Ni foam.

Impedance reference

1.5 Ω·cm² for HXP-an versus 18.8 Ω·cm² for untreated Ni foam at 1.69 V.

Test condition

Three-electrode half-cell · 0.3 M KOH · room temperature.

04 — Durability and quality stay traceable

Accelerated stress test

10,000 cycles completed at 1.0 ↔ 0.05 A/cm² with a 5 s cycle condition.

Routine inspection

Dimensions, thickness and 100% visual inspection for folds, tears, contamination and delamination.

Lot documentation

A lot CoA is not standard; the test scope and format can be agreed before order.

05 — Supply and ordering

Minimum order

One sheet · no minimum order value.

Standard lead time

Ships in approximately two weeks.

Custom lead time

Up to two months, subject to the approved configuration.

Storage

Dry indoor storage, away from heat and chemicals.

06 — Build the RFQ around the cell interface

For a useful technical and commercial response, include:

Stack-grade, laboratory or custom format

Required size, thickness and quantity

Cell active area and compression conditions

Electrolyte, temperature and current range

Inspection, documentation and delivery requirements

Start with the cell geometry. HydroXpand will map the electrode format to the active area and compression concept before quotation.

Data note: the performance values above are measured three-electrode results under the stated test conditions. Full-cell performance depends on the membrane, cathode, compression and operating protocol.

Iridium-Free NiFe Anode for AEM Water Electrolysis – HXP-an