Platinum Black Coated Electrode (2 mg/cm2) for Electrolyzer and Fuel Cell, CEFCCEPtB
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Platinum Black coated electrodes are high-performance components specifically designed for environments where standard carbon-supported catalysts (Pt/C) might fail due to corrosion or where extremely high power density is required. Unlike Pt/C, which uses carbon as a scaffold, Platinum Black is composed of pure, finely divided metallic platinum.
Woven carbon cloth is favored for its 3D architecture and durability. (1) Flexibility: It can be bent and compressed without cracking, making it ideal for "home-built" cells or flexible devices. (2) Mass Transport: The macro-pores between the woven threads allow for excellent liquid water removal. This is critical if the electrode is used as a fuel cell cathode where water is a byproduct. (3) Loading: Platinum Black can be "slurried" and deeply embedded into the weave, creating a very thick, high-capacity active layer.
Carbon paper (like Toray or Sigracet) is the standard for precision and consistency. (1) Uniformity: It provides a perfectly flat surface, ensuring that the distance between the anode and cathode is exactly the same across the entire cell. (2) Ohmic Resistance: It generally has lower through-plane resistance than cloth, making it better for high-efficiency, high-current-density stacks. (3) Fragility: It is brittle. Once it is coated with Platinum Black, it must be handled carefully to avoid snapping the fibers.
The main applications for the Pt/C are (1) Unitized Regenerative Fuel Cells; (2) Direct Methanol Fuel Cells (DMFC); and (3) Water Electrolyzer.
| Part Number |
CEFCCEPtB |
| Electrode Active material |
Platinum black wit fuel cell grade |
| Carbon Cloth Substrate |
Thickness: 410 um Density: 200 g/m2 Air Permeability: < 55 s Fiber length: 35 mm Electrical Resistivity (through plane) < 13 mΩcm² Microporous layer is located at the catalyst side |
| Carbon Paper Substrate |
Thickness: 215 um Density: 70 g/m2 Water Contact Angle (MPL side): > 130° Substrate PTFE Treatment: 5 wt% Microporous layer is located at the catalyst side |
| Titanium Felt Substrate |
Thickness: 250 um Porosity: 60-70% Fiber length: 70 mm Fiber diameter: 25-50 um |
| Loading Amount |
2 mg/cm2 |
| Electrode Dimension |
L10cm * W10cm (Other sizes, 20cm * 20cm, 30cm * 30cm, 40cm * 40cm can be supplied upon request) |
| Package Size | 1 pcs/pack |
Notes: Please try to store the platinum black electrodes in a dry place.
References:
- K. Yasuda, et al. Characteristics of a Platinum Black Catalyst Layer with Regard to Platinum Dissolution Phenomena in a Membrane Electrode Assembly, J. Electrochem. Soc., 2006, 153 A1599.
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M. Rosenbaum, et al. Investigation of the electrocatalytic oxidation of formate and ethanol at platinum black under microbial fuel cell conditions, J. Solid State Electrochem., 2006, 10, 872–878.