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Novel PEM electrolyzer catalyst-coated membrane for more efficient and lower-cost green hydrogen production

Novel PEM electrolyzer catalyst-coated membrane for more efficient and lower-cost green hydrogen production

Nov 29 , 2023

Catalyst coated membrane (CCM) for PEM electrolysis

We have developed a novel Catalyst-Coated Membrane (CCM) technology for green hydrogen production and assembled an electrolyser to further test the technology. Green hydrogen, produced by splitting water into hydrogen and oxygen using electrolyzers powered by renewable electricity, is expected to play a major role in the energy transition in the coming decades.


How do CCMs work?

CCMs consist of precisely structured catalysts typically platinum (cathode) and iridium (anode) that are applied to solid membranes in a way which maximises hydrogen production.  

Focus on CCMs for Proton Exchange Membrane (PEM) electrolyzers

The new CCM has been tested in laboratory durability, and the breakthrough proprietary high ion conductivity membrane and high activity catalyst enable higher electrolyser efficiency and higher current density.


Catalyst slurry for water electrolysis with unique formula

PEM water electrolyzer applications, fabrication of catalyst coated membranes (CCM), anode catalysts (IrO2 and IrRuO2) and cathode catalysts (Pt/C). These catalysts are highly dispersible into slurries and have been evaluated as excellent in performance and durability in cyclic testing.


Proton Exchange Membrane (PEM) electrolysis produces purer hydrogen than any other form of hydrogen production. To compete with other means of hydrogen production, highly efficient electrolyzers are required. However, PEM electrolyzers are prone to electrochemical energy loss, corrosion, and oxidation, making hydrogen production costly.


Our family of catalysts optimized for PEM electrolyzers provides enhanced system performance, proven to increase efficiency and lifetime, reducing the long-term cost of green hydrogen production.


PEM Key Components

Stack Assembly Lines

Catalyst Coated Membranes

Porous Transport Layer

Bipolar Plates


Gas Diffusion Layer (GDL)

Why is GDL so important?

GDL is an important part of the core MEA of the battery. The GDL forms the basis of the anode and cathode and is responsible for water management, transport of reactants, electricity and heat, and providing structural support for the components.


GDLs must be both electrically and thermally conductive to allow current flow and have a suitable pore structure to optimize mass transport. The structure must also exhibit the correct balance of hydrophobicity to manage the movement of water and gas in the MEA. The latter characteristic is critical for the efficient operation of the battery. If the GDL is too wet during operation, the by-product (water) is not effectively removed, flooding may occur and hinder the reaction gas movement. Likewise, if the GDL is too dry, the film dries out, resulting in higher resistance. In both cases, the performance of the battery will be reduced.

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