Platinum-Nickel (Pt-Ni, Premetek) Alloy on Carbon Black as Electrocatalysts for Electrolyzer and Fuel Cell, 0.5 g/bottle, CEFCEPtNiC
Use your own shipping account?
We support FedEx, UPS, and DHL third-party billing for institutional customers.
Place your order first, then email shipping@echemsupplies.com with your account details and order number. We'll generate the label using your account and refund your shipping charges, less a handling fee.
Platinum-Nickel (Pt-Ni) electrocatalysts represent the "cutting edge" of fuel cell research. While Pt-Co is the current commercial standard (used in the Toyota Mirai), Pt-Ni has demonstrated the highest theoretical and lab-scale activity ever recorded for the Oxygen Reduction Reaction (ORR). The fascination with Pt-Ni lies in its specific crystal structures—particularly the octahedral shape—which can outperform standard Pt/C by more than 10 times in mass activity.
In PEMFCs, Pt-Ni is the premier candidate for the cathode (ORR). (1) The (111) Facet Advantage: Research into Pt-Ni reached a breakthrough when it was discovered that the Pt3Ni (111) surface is exceptionally active. Octahedral nanoparticles (8-sided) exclusively expose these (111) facets, leading to "record-breaking" performance. (2) Massive Activity Boost: Lab-scale Pt-Ni octahedral catalysts have shown ORR activities up to 90 times higher than state-of-the-art commercial Pt/C. This allows for significantly lower platinum loading while maintaining high power output. (3) Electronic Tuning: The Nickel atoms cause a lattice contraction (compressive strain) and electronic shifts (ligand effect) that prevent oxygen intermediates from "sticking" too tightly to the Platinum, speeding up the reaction.
In PEM electrolyzers, Pt-Ni is primarily used at the cathode (HER). (1) High HER Activity: Pt-Ni alloys are highly efficient for the Hydrogen Evolution Reaction. Interestingly, the activity is "potential-dependent," meaning the catalyst can actually restructure itself during operation to become more active. (2) Stability Concerns (Leaching): The main challenge in electrolyzers is the highly acidic environment. Nickel is more prone to leaching (dissolving) than Cobalt or Iron. If Ni^2+ ions escape, they can contaminate the Nafion membrane, reducing its proton conductivity and shortening the system's life. (3) Solution: Commercial-grade Pt-Ni is often "de-alloyed" or "acid-etched" during manufacturing to create a Pt-skin—a protective layer of pure platinum that cages the Ni-rich core.
| Part Number |
CEFCEPtNi11C20 |
CEFCEPtNi31C20 |
CEFCEPtNi11C40 |
CEFCEPtNi31C40 |
CEFCEPtNi31KBC60 |
| Electrocatalyst Composition |
Highly dispersed platinum-nickel nanoparticles Vulcan XC-72 carbon black |
Highly dispersed platinum-nickel nanoparticles Vulcan XC-72 carbon black |
Highly dispersed platinum-nickel nanoparticles Vulcan XC-72 carbon black |
Highly dispersed platinum-nickel nanoparticles Vulcan XC-72 carbon black |
Highly dispersed platinum-nickel nanoparticles Ketjen carbon black |
| Platinum-Cobalt Content |
20 wt% Pt-Ni (1:1 ratio) (15.4 wt% Pt, 4.6 wt% Ni), 80 wt% carbon black |
20 wt% Pt-Ni (3:1 ratio) (18.2 wt% Pt, 1.8 wt% Ni), 80 wt% carbon black |
40 wt% Pt-Ni (1:1 ratio) (30.8 wt% Pt, 9.2 wt% Ni), 60 wt% carbon black |
40 wt% Pt-Ni (3:1 ratio) (36.4 wt% Pt, 3.6 wt% Ni), 60 wt% carbon black |
60 wt% Pt-Ni (3:1 ratio) (54.5 wt% Pt, 5.5 wt% Ni), 60 wt% Ketjen black |
| Metal Surface Area |
~120 m2/g |
~90 m2/g |
~75 m2/g |
~60 m2/g |
~75 m2/g |
| Catalyst BET Surface Area: |
~200 m2/g |
~200 m2/g |
~150 m2/g |
~150 m2/g |
~320 m2/g |
| Metal Crystallite Size |
2-3 nm |
2-4 nm |
3-4 nm |
4-6 nm |
3-5 nm |
| Catalyst granule size D(100) |
≤ 75 µm |
≤ 75 µm |
≤ 75 µm |
≤ 75 µm |
≤ 75 µm |
| Impurities |
≤ 500 ppm |
≤ 500 ppm |
≤ 500 ppm |
≤ 500 µm |
≤ 500 µm |
| Package Size | 0.5 g/bottle | 0.5 g/bottle | 0.5 g/bottle | 0.5 g/bottle | 0.5 g/bottle |
Notes: Please try to store the Pt-Ni/C powder in a dry place.
References:
- X. Tian, et al. Engineering bunched Pt-Ni alloy nanocages for efficient oxygen reduction in practical fuel cells, Science, 2019, 366, 855-856.
- X. Xia, et al. Mixed-Dimensional Pt–Ni Alloy Polyhedral Nanochains as Bifunctional Electrocatalysts for Direct Methanol Fuel Cells, Adv. Mater., 2023, 35, 2206508.