Ceimig Ltd

Units 1-3, Smeaton Road
Wester Gourdie Industrial Estate 
Dundee, DD2 4UT



Platinum Black, Platinum/Ruthenium, Iridium Ruthenium Oxide

Precious metals are used in fuel cells to maximise the lifetime of the cell for any given performance requirement. Materials such as molybdenum or nickel are prone to deactivation owing to particle restructuring and the formation of surface adsorbed debris from the fuel component. Precious metals offer significant resistance to these effects - but, precious metals are expensive and it is vitally important for developers and manufacturers to maximise efficiency and yield.

With over 30 years of experience in Catalytic Chemistry, Ceimig has unparalleled expertise in the development and manufacture of high quality HSA (High Surface Area) materials for application in Hydrogen and Ethanol, Proton Exchange Membrane (PEM) Fuel Cells.

We use a proprietary process which avoids sintering and results in materials that exhibit typical surface areas in the range 80 - 100m²/g - up to 10 times the typical surface area of industry standard materials. Surface area and porosity measures fall into a tight statistical distribution - maximising process and performance consistency and reducing waste.

Our customers see consistently ‘sooty’ materials rather than variably sooty and salty materials that are available elsewhere. This ensures that our customers benefit from the best available cost to technical performance ratio, greater cell design flexibility and enhanced process stability.

Cell Technology

Typical Application

Ceimig Product Group

PEM Cathode catalysts

Oxygen/air electrode

Platinum Black (HSA-Pt)
Highly dispersed Pt, black in appearance, surface area ~ 32 m2g, tap density < 0.7 g/ cm3.

Platinum/Ruthenium (HSA Pt/Ru Black)
Pt/Ru, highly efficient fuel cell electrode material, low sulphate and chlorine content

PEM anode catalysts


Stabilised Iridium 
Metal Assay 74-77%

If you have a Fuel Cell application or require specific material characteristics which are unavailable from current products Ceimig offers a Custom Compound Synthesis Service (CCSS) to help you meet the more challenging requirements.