Nickel/Carbon (Ni/C, Premetek) as Electrocatalysts for Electrolyzer and Fuel Cell, 1 g/bottle, CEFCNiC
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Nickel on Carbon (Ni/C) is one of the most important non-precious metal electrocatalysts. While platinum and iridium are often too expensive for large-scale industrial use, nickel-based materials provide a low-cost, earth-abundant alternative that is particularly effective in alkaline environments.
In alkaline water splitting, Ni/C is the primary candidate for replacing platinum group metals. (1) Cathode (Hydrogen Evolution Reaction - HER): In alkaline solutions (1.0 M KOH), Ni/C is highly active for producing hydrogen. It is often enhanced by using Nickel Single Atoms anchored on nitrogen-doped carbon, which can achieve performance levels that rival commercial Pt/C by optimizing hydrogen binding energy. (2) Anode (Oxygen Evolution Reaction - OER): Metallic nickel naturally forms Nickel Oxide/Hydroxide (NiOx/Ni(OH)2) layers during electrolysis. These layers are among the most active non-precious catalysts for splitting water to release oxygen. (3) Bifunctional Performance: Ni/C is frequently used in "Unitized" systems because it can handle both hydrogen and oxygen reactions in alkaline media, simplifying the design of the electrolyzer stack.
Ni/C is a cornerstone of Anion Exchange Membrane Fuel Cells (AEMFC), where acidic corrosion is not a factor. (1) Anode (Hydrogen Oxidation Reaction - HOR): Unlike in acidic PEM cells where nickel would dissolve, in alkaline fuel cells, Ni/C is a stable and efficient anode. It facilitates the oxidation of hydrogen at a fraction of the cost of platinum. (2) Direct Alcohol Oxidation: Ni/C is an exceptional catalyst for Direct Methanol (DMFC) and Direct Ethanol Fuel Cells (DEFC) in alkaline media. It facilitates the removal of carbonaceous "poisoning" species (like CO) from the catalyst surface through a mediated electron transfer involving the Ni^{2+}/Ni^{3+} redox couple. (3) Urea Fuel Cells: Nickel is uniquely active for the Urea Oxidation Reaction (UOR). Ni/C-based fuel cells can generate electricity while simultaneously cleaning wastewater containing urea.
| Part Number |
CEFCENiC5 |
CEFCENiC10 |
CEFCENiC20 |
CEFCENiC40 |
CEFCENiCKB60 |
| Nickel/Carbon Content |
5 wt% Ni, 95 wt% carbon black (Vulcan XC-72) |
10 wt% Ni, 90 wt% carbon black (Vulcan XC-72) |
20 wt% Ni, 80 wt% carbon black (Vulcan XC-72) |
40 wt% Ni, 60 wt% carbon black (Vulcan XC-72) |
60 wt% Ni, 40 wt% carbon black (Vulcan XC-72) |
| Metal Surface Area |
~20 m2/g |
~25 m2/g |
~20 m2/g |
~15 m2/g |
~10 m2/g |
| Catalyst BET Surface Area: |
~235 m2/g |
~225 m2/g |
~200 m2/g |
~150 m2/g |
~320 m2/g |
| Metal Crystallite Size |
~20 nm |
~25 nm |
~25 nm |
~40 nm |
~50 nm |
| Catalyst granule size D(100) |
≤ 75 µm |
≤ 75 µm |
≤75 µm |
≤75 µm |
≤75 µm |
| Impurities |
≤ 500 ppm |
≤ 500 ppm |
≤ 500 ppm |
≤ 500 ppm |
≤ 500 ppm |
| Package Size | 1.0 g/bottle | 1.0 g/bottle | 1.0 g/bottle | 1.0 g/bottle | 1.0 g/bottle |
Notes: Please try to store the Ni/C powder in a dry place.
References:
- L. Wang, et al. Multivariate MOF-Templated Pomegranate-Like Ni/C as Efficient Bifunctional Electrocatalyst for Hydrogen Evolution and Urea Oxidation, ACS Appl. Mater. Interfaces 2018, 10, 5, 4750–4756.
- J. Ding, et al. N-Doped 3D Porous Ni/C Bifunctional Electrocatalysts for Alkaline Water Electrolysis, ACS Sustainable Chem. Eng. 2019, 7, 4, 3974–3981.