economical
we're the water
electrolyser
company
We’re CENmat, a vertically integrated water electrolyser company built for the climate era. Our breakthrough technologies allow the production of economical and truly green hydrogen. We call it electrolysis transformation.
Reinventing what it means to be an electrolyser company, we’re on a mission to innovate exciting and create new electrolyser technologies that are sustainable, scalable, highly efficient and low-cost for a green and fossil-free future.
innovating electrolysis
for a greener future
At CENmat, we are thinking big and reimagining water electrolysis – at the materials, components, stack and plant level – designing it to be scalable, environmentally sustainable, flexible and economical, setting a new standard for green hydrogen production via water electrolysis.
build a
fossil-fuel free
independent future
with us
CENmat is an innovation hub to catalyse electrolysis into a truly scalable, green and profitable technology. At CENmat we offer multiple product lines.
our products
HYScale – AEM electrolyser stacks and systems: We re-engineered electrolysis from scratch into HYScale – CENmat’s AEM electrolyser technology and stack/system offering in the roughly 0.5–1 MW class. With no need for critical raw materials; a highly novel and economical cell design; and stable, green, fully recyclable anion-exchange membranes and ionomers, HYScale is built around CENmat’s own materials for customers who need more than coupon samples. The technology is designed to operate efficiently and durably at current densities as high as 2A*cm-2.
AionFLX™ membranes – PFAS-free anion-exchange membranes: AionFLX™ is CENmat’s PFAS-free, fluorine-free anion-exchange membrane family for AEM water electrolysis and adjacent alkaline electrochemical cells. Membranes support wet or dry assembly and are supplied as pilot-relevant sheet sizes for qualification and scale-up. They are designed to work as a system with matching AionFLX™ ionomer and CENmat’s CRM-free electrodes across typical alkaline operating windows.
AionFLX™ ionomers – matched PFAS-free binders for AEM electrodes: AionFLX™ ionomer is the binder chemistry matched to AionFLX™ membranes, so buyers are not pairing a fluorine-free membrane with a fluorinated ionomer. It is used in catalyst layers and electrode builds for AEM water electrolysis and related AEM devices, and is offered as part of a materials pack with membranes and coated electrodes when customers want one qualification path.
OXYGN (AEM) – CRM-free oxygen-evolution catalysts and coated electrodes: For AEM electrolysis, OXYGN is CENmat’s CRM-free oxygen-evolution catalyst line – no critical raw materials and no iridium pitch on the AEM side. It is available as catalyst and as spray-printed catalyst-coated substrates on nickel felt or carbon paper for AEM electrolysers and related oxidation electrodes. OXYGN is intended to qualify together with AionFLX™ membranes and ionomers in alkaline cells.
H2GN – CRM-free hydrogen-evolution catalysts and coated electrodes: H2GN is CENmat’s CRM-free hydrogen-evolution catalyst line for AEM electrolysis and related reduction electrodes. It is offered as catalyst and as spray-printed coated substrates matched to AionFLX™ and OXYGN packs, so membrane and electrodes can be qualified as one system rather than three vendors.
OXYGN (PEM) – ultra-low-iridium oxygen evolution for PEM: Separate from the AEM story, OXYGN for PEM is CENmat’s ultra-low-iridium oxygen-evolution path for PEM electrolysers. The highly active and durable iridium-based electrocatalyst reduces iridium loading to about 0.2 mg*cm-2 – roughly an order of magnitude below legacy high-iridium anodes – without compromises in stability and performance, helping PEM electrolysis become truly scalable under iridium scarcity pressure.
our projects
NEWELY – is an EU Horizon 2020 FCH JU project that aims at redefining anion-exchange membrane water electrolysis (AEMWE).
The project works on the design, component and material development of a new AEM water electrolyser prototype, demonstrating long-term durability at relevant operating conditions. With the innovations on the materials, on the cell and stack design and with the improvements in operating conditions, NEWELY represents the new generation of AEMWE.
PROMET-H2 – is an EU Horizon 2020 project that aims to develop new technologies that will improve the processes of energy transmission to hydrogen, as well as its cost and storage.
The project works at reducing or eliminating the use of expensive precious metal catalysts and other expensive components in PEM electrolysis and employing a new hydraulic compression technology, lowering the CAPEX to 500-700 € kW-1 without compromising performance.
REDHY – is an EU Horizon project that aims at redox-mediated water electrolysis for economic, critical-raw-material-free green hydrogen production.
The project works on a fundamentally reimagined electrolyser concept that avoids critical raw materials and fluorinated membranes or ionomers, targeting durable high-current-density operation. A multi-cell stack prototype is developed and validated in the laboratory to demonstrate long-term efficiency and prepare the pathway toward the next generation of CRM-free electrolysis.
SWEETHY – is an EU Horizon project that aims at direct seawater electrolysis technology for distributed green hydrogen production.
The project works on specialised materials and a scalable high-pressure AEM electrolyser stack designed for intermittent renewable power, enabling hydrogen production from natural or alkaline seawater. Demonstration activities target thousands of hours of operation under real Mediterranean seawater conditions while integrating sustainability and techno-economic analysis.
HYSCALE – is an EU Horizon project that aims at economic green hydrogen production at scale via a novel, critical-raw-material-free advanced alkaline membrane water electrolysis technology.
The project works on upscaling CRM-free membranes, ionomers, electrodes and stacks toward a 100 kW system, targeting high current densities at low temperature with a low CAPEX pathway. Industrial validation at TRL5 is intended to accelerate commercial deployment of efficient, scalable AEM electrolysis.