Platinum/Carbon (Pt/C, Tanaka) Electrocatalysts for Electrolyzer and Fuel Cell, 0.5 g/bottle, CEFCETPtC
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Tanaka Kikinzoku Kogyo (TKK) is one of the world's leading manufacturers of high-performance Pt/C (Platinum on Carbon) electrocatalysts, widely recognized for their high platinum dispersion and durability in both PEM fuel cells (PEMFC) and electrolyzers (PEMWE).
In fuel cell applications, Tanaka Pt/C catalysts are utilized at both electrodes, though the specific grade choice depends on the performance target. (1) Anode (HOR): Typically uses TEC10E50E or similar high-surface-area catalysts. Because the Hydrogen Oxidation Reaction is fast, lower loadings can be used while maintaining high efficiency. (2) Cathode (ORR): This is the most demanding environment. Tanaka’s PtCo (Platinum-Cobalt) alloy catalysts (e.g., TEC36E52) are increasingly favored for automotive cathodes because they offer significantly higher Oxygen Reduction Reaction activity than pure Pt/C. (3) Carbon Corrosion Resistance: For systems requiring extreme durability (e.g., heavy-duty trucks), Tanaka offers graphitized carbon supports that are more resistant to oxidation during start-stop cycles than traditional carbon black.
In PEM electrolyzers, Tanaka Pt/C is strictly used as the Cathode Catalyst for the Hydrogen Evolution Reaction (HER). (1) Cathode Performance: TEC10E50E is a common choice for electrolyzer cathodes because it enables current densities as high as 2.0 A/cm2 with very low overpotential. (2) Crossover Prevention: A major innovation from Tanaka (recognized with the 2025 Technology Award) is a new catalyst technology that prevents "hydrogen crossover". This allows for thinner membranes (increasing efficiency) without risking the safety issues of hydrogen gas leaking into the oxygen side. (3) Anode Note: Tanaka does not use Pt/C for the electrolyzer anode; instead, they provide specialized Iridium Oxide (IrOx) catalysts (e.g., TEC77100) to withstand the highly oxidative environment.
| Part Number |
CEFCETPtC20 |
CEFCETPtC30 |
CEFCETPtC40 |
CEFCETPtC50 |
CEFCETPtC60 |
| Catalyst Types |
TEC10E20E |
TEC10E30E |
TEC10E40E |
TEC10E50E |
TEC10E60TPM |
| Platinum Content | 20 wt% Pt on high surface area carbon | 30 wt% Pt on high surface area carbon | 40 wt% Pt on high surface area carbon | 50 wt% Pt on high surface area carbon | 60 wt% Pt on high surface area carbon |
| Metal Crystallite Size |
~2.4 nm |
~2.3 nm |
~2.2 nm |
~2.1 nm |
~2.6 nm |
| Package Size | 0.5 g/bottle | 0.5 g/bottle | 0.5 g/bottle | 0.5 g/bottle | 0.5 g/bottle |
Catalyst Selection Note:
(1) For high activity application, the TEC10E30E is the best due to its highest metal surface area of 220.5 m2/g Pt.
(2) For high temperature application, the TEC10E50E is the best option since the Pt retention rate under high temperature, as well as the Pt particle size is controllable.
(3) For high energy density with high loading application, the TEC10E60TPM is the best option.
References:
- V. Karimi, et al. An Effective Route to Enhance Pt/C Electrocatalyst Durability through Addition of Ceramic Nanoparticles to Facilitate Pt Redeposition, ACS Appl. Mater. Interfaces 2024, 16, 48, 65993–66007.
- X. Ren, et al. Current progress and performance improvement of Pt/C catalysts for fuel cells, J. Mater. Chem. A, 2020,8, 24284-24306.