High-purity unsupported spherical nano-platinum powder engineered for the Hydrogen Evolution Reaction (HER) in PEM and Alkaline water electrolyzers. Delivers ultra-low overpotential, high electrochemical surface area (ECSA), and excellent ink formulability.
| Parameter | Specification Baseline | Analytical Method | Engineering Note |
|---|---|---|---|
| Product Code / Reference | SP-B00101 / ZNO-CAT-PT992 | Batch CoA Traceability | Top Nano Lab Code SP-B00101 · ZnoNova Export SKU ZNO-CAT-PT992 |
| Platinum (Pt) Purity | ≥ 99.2 wt% | ICP-OES / ICP-MS | Trace base metals < 0.5%, zero halide residues |
| Physical Form | Unsupported Nano-Pt Black Powder | Visual / FE-SEM | Easily dispersed in isopropanol/Nafion or water-based inks |
| Crystallite & Domain Size | 2.5–5.0 nm (TEM) · 5–9 nm (XRD, mean 6.8 nm) | HR-TEM & XRD Scherrer | Primary spherical crystallites (2.5–5.0 nm) with 6.8 nm mean XRD domain |
| Electrochemical Active Surface Area (ECSA) | ≥ 45 m²/g | Cyclic Voltammetry (H-upd) | Provides superior Pt utilization efficiency in CCM |
| Target Reaction | Cathode HER (2H⁺ + 2e⁻ → H₂) | Linear Sweep Voltammetry | Overpotential < 35 mV @ 10 mA/cm² in 0.5 M H₂SO₄ |
Estimate total Nano-Pt powder required (including ultrasonic spray/slot-die overspray allowance) and Nafion D520 dispersion volume for your MEA production run.
Enough catalyst to coat 10,000–20,000 cm² of active CCM area at 0.25–0.50 mg/cm² loading: