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Palladium Foil
Available Configurations
Properties common to all products in this list
| Purity | Thickness | Sides | Temper ⓘ | Other Variant |
|---|---|---|---|---|
| 99.75% (2N75) to 99.99% (4N) | 0.0005 mm (thin foil) to 2 mm (sheet) | 5 mm to 150 mm | As Rolled | Light Tight (Pinhole Free) |
Need custom configurations? Please contact us.
Key Features
Palladium Foil at 99.75–99.99% purity is a platinum group metal foil defined by one property no other metallic foil can match: selective permeability to hydrogen, allowing hydrogen atoms to diffuse through the bulk material while blocking all other gases entirely:
Unique Selective Hydrogen Permeability — No Other Metallic Foil Provides This Property
Palladium is selectively permeable to hydrogen and to no other gas — hydrogen atoms diffuse through the bulk metal while all other gases are blocked entirely. This makes Palladium Foil the material of choice for hydrogen purification membranes, isotope separation cells, and any application requiring a solid-state hydrogen-selective barrier where no other metallic foil can substitute.
Excellent Heterogeneous Catalyst for Hydrogenation, Oxidation & Coupling Reactions
Palladium is an excellent heterogeneous catalyst, and its foil format provides a flat, high-surface-area substrate for catalytic reaction studies, fuel cell electrode assemblies, and surface catalysis investigations where a well-characterized, reproducible noble metal catalytic surface in a defined geometry is required.
Noble Metal Chemical Resistance in a Wide Range of Environments
Palladium resists attack by a wide range of acids and oxidizing environments in ambient conditions — providing chemical stability in electrochemical cells, analytical instruments, and process environments where base metal foils would corrode or contaminate the system. Supplied in the as-rolled condition, it is readily handled and integrated into membrane and electrode assemblies.
Wide Thickness Range (0.0005 mm to 2 mm) Across Purity Grades 2N75 to 4N
Available from 0.0005 mm ultra-thin membrane foil through to 2 mm sheet across sizes up to 150 mm, with purity options from 2N75 to 4N — covering the range from thin hydrogen separation membranes and electrode foils through to thicker substrate and target forms, with purity grade selection matched to industrial or high-purity research requirements.
Central Material for Hydrogen Storage, Surface Catalysis & Electrochemical Research
Palladium Foil is central to hydrogen storage investigations, surface catalysis studies, and electrochemical characterization in research, where its noble metal substrate with well-defined and reproducible surface chemistry provides a platform for systematic experimental programs that cannot be replicated with other metallic foils.
Industrial Applications
Palladium Foil is used across hydrogen separation, fuel cell technology, catalysis, electrochemistry, and surface science research wherever selective hydrogen permeability, noble metal chemical stability, and a well-characterized catalytic surface must be provided in a foil form factor:
- ✦ Hydrogen Diffusion Membrane Cells & Purification Systems
- The defining application for Palladium Foil: hydrogen diffusion membrane cells and purification systems where palladium's unique selective permeability — allowing only hydrogen to pass through the solid metal while blocking all other gases — provides the gas-selective barrier function that no other metallic foil can replicate. Used across laboratory-scale permeation measurement, isotope separation, and industrial hydrogen purification at purity grades matched to the product stream specification.
- ✦ Fuel Cell Component Substrates & Electrode Foils
- Applied as fuel cell component substrates and electrode foils, where palladium's catalytic activity for electrochemical hydrogen oxidation and oxygen reduction, combined with its noble metal chemical stability in fuel cell electrolyte environments, supports reliable electrode performance across the operating life of the cell.
- ✦ Electrochemical Electrode Foils & Reference Substrates
- Used as electrochemical electrode foils and reference substrates in voltammetry, impedance spectroscopy, and electrochemical characterization, where palladium's noble metal surface chemistry, resistance to corrosion in a wide range of electrolytes, and well-defined electrochemical behavior provide a reproducible precious metal electrode for systematic electrochemical research.
- ✦ Thin-Film Catalytic Research & Surface Catalysis Studies
- Employed as a substrate and active catalytic surface in thin-film catalytic research and surface catalysis studies, where palladium's catalytic activity for hydrogenation, coupling, and oxidation reactions — combined with the foil's well-defined surface area and purity-controlled composition — provides a reproducible platform for systematic investigation of heterogeneous catalytic mechanisms and thin-film catalyst performance.
- ✦ Hydrogen Storage Investigations & Electrochemical Characterization Research
- Central to hydrogen storage research, where palladium's well-documented hydrogen absorption behavior — forming palladium hydride phases across a defined pressure-composition isotherm — makes Palladium Foil the standard experimental substrate for hydrogen absorption kinetics, thermodynamics, and cycling stability studies; and used in electrochemical characterization research where a noble metal foil with well-defined and reproducible surface chemistry is an experimental requirement.
Material Properties
| Element | Value |
|---|---|
| Atomic number | 46 |
| Crystal structure | Face centred cubic |
| Electronic structure | Kr 4d¹⁰ |
| Valences shown | 2, 3, 4 |
| Atomic weight( amu ) | 106.42 |
| Thermal neutron absorption cross-section( Barns ) | 6 |
| Photo-electric work function( eV ) | 5 |
| Natural isotope distribution( Mass No./% ) | 108/ 26.7 |
| Natural isotope distribution( Mass No./% ) | 110/ 11.8 |
| Natural isotope distribution( Mass No./% ) | 104/ 11.0 |
| Natural isotope distribution( Mass No./% ) | 102/ 1.0 |
| Natural isotope distribution( Mass No./% ) | 105/ 22.2 |
| Natural isotope distribution( Mass No./% ) | 106/ 27.3 |
| Atomic radius - Goldschmidt( nm ) | 0.137 |
| Ionisation potential( No./eV ) | 1/ 8.3 |
| Ionisation potential( No./eV ) | 2/ 19.4 |
| Ionisation potential( No./eV ) | 3/ 32.9 |
| Element | Value |
|---|---|
| Material condition | Soft |
| Material condition | Hard |
| Poisson's ratio | 0.39 |
| Poisson's ratio | 0.39 |
| Bulk modulus( GPa ) | 187 |
| Bulk modulus( GPa ) | 187 |
| Tensile modulus( GPa ) | 121 |
| Tensile modulus( GPa ) | 121 |
| Hardness - Vickers( kgf mm⁻² ) | 40 |
| Hardness - Vickers( kgf mm⁻² ) | 100 |
| Tensile strength( MPa ) | 140-195 |
| Tensile strength( MPa ) | 325 |
| Yield strength( MPa ) | 205 |
| Yield strength( MPa ) | 34.5 |
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 10.8@20 |
| Temperature coefficient( K⁻¹ ) | 0.0042@0-100 |
| Thermal emf against Pt (cold 0C - hot 100C)( mV ) | -0.57 |
| Element | Value |
|---|---|
| Boiling point( C ) | 3140 |
| Density( gcm⁻³ ) | 12@20°C |
| Element | Value |
|---|---|
| Melting point( C ) | 1554 |
| Latent heat of evaporation( J g⁻¹ ) | 3398 |
| Latent heat of fusion( J g⁻¹ ) | 157 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 244@25 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 71.8@0-100°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 11@0-100 |
Tolerances
| Thickness | <0.01mm | ±25% |
|---|---|---|
| Thickness | 0.01mm - 0.05mm | ±15% |
| Thickness | >0.05mm | ±10% |
| Linear dimension | <100mm | ±1mm |
| Linear dimension | >=100mm | +2 / -1% |