Porosimeters - Pore Structure Analysis

Characterize porous and microporous materials in a real environment.

You can improve your product through a complete understanding of the porous structure of its components. Greenlight's technology allows measuring of pore size distribution in the widest range: from 1nm up to 300 micrometers. Using MSP (Method of Standard Porosimetry), you will be able to measure: total porosity, specific surface area, contact angle of samples in various liquids, and hydrophilic / hydrophobic characteristics. MSP also allows investigation of the structure of swollen samples in a working liquid, such as water, methanol and other solvents used in PEM Fuel Cells as well as in various batteries.

The knowledge of porous structure of components of PEM Fuel Cells (membrane, gas diffusion catalytic anode and cathode and gas distribution carbon layers) is important for understanding of mass and heat transfer process inside cells to increase specific energy or power of electrochemical devices in whole.

The following information about porous structures can be obtained by using the Method of Standard Porosimetry (MSP) and Automated Standard Porosimeter:

For Proton Exchange Membranes:

Pore radius distribution curve in real environment (in water) MSP tests using working liquids.
Adsorption (desorption) isotherms for water in the membrane. This information is important for optimization of water vapour transfer into cells gas chambers.
Specific surface area. This characteristic is important from the point of view of optimization of membrane's structure to increase its electroconductivity.

Gas Diffusion Catalytic Electrodes & for Gas Distribution Layers:

Hydrophilic and hydrophobic porosity.
Pore radii distribution curves.
Specific surface area. It is important for optimization of catalyst layers in electrodes catalyst.
Distribution of water vs. capillary pressure. This information is important for optimization of Water Management in the Fuel Cell.
Contact angle vs. pore radius etc.

Distribution of water (or electrolyte) between components of the Fuel Cell:

Calculation of distribution of water between all components of the Fuel Cell in dependence on total water content can be produced using the results of porosimetric measurements of each component.