ELECTRODE SPECIFICATION
SUBSTRATENi Foam Substrate 100 to 1000 cm2
Our electrode is built on Ni foam: an open-porosity nickel substrate that supports three-dimensional catalyst coverage. Substrate area ranges from 100 to 1000 cm2.
ELECTRODE SPEC
SUBSTRATE
This spec
SUBSTRATE
HER overpotential
@ 100 mA/cm² (no IR)
OER overpotential
@ 100 mA/cm² (no IR)
Cell @ 0.5 A/cm² / 60 °C
91.4% efficiency
1000-hour drift
@ 0.5 A/cm² / 40 °C
What Ni foam is
Ni foam is a sintered nickel substrate with open-porosity structure. Its high surface area and three-dimensional connectivity make it a common substrate for electrochemical electrodes. The electroless-deposited NiCo catalyst coats this open structure conformally.
Substrate sizes
We produce electrodes on Ni foam substrates ranging from 100 to 1000 cm2. Bench-scale qualification typically uses 5 cm2 coupons (matching the size used in our published AEM test cell), then scales to the larger substrates for pilot-cell builds.
For OEM stack qualification or pilot-plant integration, specific size requirements can be discussed.
Performance with this substrate
In a 5 cm2 AEM cell with the electroless-deposited bifunctional NiCo electrode on both sides (on Ni foam substrate) and a commercial Zirfon separator (500 um), 0.5 A/cm2 at 1.62 V at 60 deg C (91.4% efficiency). HER overpotential 80 mV, OER overpotential 260 mV, both at 100 mA/cm2 in 30 wt% KOH (no IR correction).
Substrate role in stability
The Ni foam substrate is mechanically robust and chemically compatible with concentrated KOH. The 1000-hour run on bifunctional NiCo electrode (deposited on Ni foam) and commercial Zirfon separator at 0.5 A/cm2 / 40 deg C: 21 uV/hr voltage drift.
Where this specification matters
Industrial applications where nickel foam substrate (100 to 1000 cm2) is a primary qualification metric.
Frequently asked questions
How is nickel foam substrate (100 to 1000 cm2) measured?
All published values were measured in a 5 cm² AEM cell with our bifunctional NiCo electrode on both sides, 30 wt% KOH electrolyte, zero-gap assembly, and a commercial Zirfon separator (500 µm) as the membrane reference. Overpotentials are reported without IR correction.
Can I reproduce this number on my own cell?
Yes. Bench-scale 5 cm² coupons matching the size used in our published AEM test cell are available. Reproducing the cell conditions (30 wt% KOH, zero-gap, commercial Zirfon separator, bifunctional NiCo electrode on both sides) lets a customer team confirm the published number directly.
What substrate sizes can I order?
We produce the bifunctional NiCo electrode on Ni foam in the 100 to 1000 cm² size range. Bench-scale coupons and pilot-scale electrodes both ship from this same product line. Specific sizes can be discussed for OEM stack integration.
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