From electrochemical concept to scalable product
ionysis combines advanced materials, development services and scalable manufacturing to deliver electrodes, CCMs, MEAs and customized solutions for electrolysis, fuel cells and emerging electrochemical applications.
One platform. Multiple levels of integration.
Choose the component level that fits your application, internal capabilities and development stage.
We offer several configurations for PEM or AEM electrolyzers, fuel cells and CO2 technologies:
AEM: anion exchange membrane, CCM: catalyst coated membrane, GDE: gas diffusion electrode, MEA: membrane electrode assembly, PEM: proton exchange membrane
AEM water electrolysis
Iridium-free electrode and MEA solutions for anion-exchange water electrolysis.
Designed for high performance, scalable manufacturing and customer-specific integration. From drop-in components to fully integrated 7-layer MEAs, ionysis supports you at every stage of your AEM electrolysis scale-up journey.
Cathode GDE
High-performance cathode electrodes for fast integration and scalable stack development.
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Low gas cross over
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Substrates: non-woven carbon paper with/without micro porous layer
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Up to 70 cm coating width
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Validated in full-size stacks
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Optional: PFAS-free & custome components
CCMs & MEAs
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Low gas cross-over
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Anode and cathode half-CCMs (sheet or roll)
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Full CCMs (up to Din A4)
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5-layer/7-layer MEAs with alkaline-stable framing
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Available in application-specific geometries
Unlock higher performance while reducing integration effort on your side.
Customized Products
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Customized GDEs, CCMs and 7-layer MEAs
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Integration of customer-specific catalysts and membranes
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Adaptation of geometry and layer structure
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Validation support included
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Suitable for stack developers, component manufacturers and service provide
Our platform is built to adapt to your materials, your architecture and your process.
PEM water electrolysis
Two pathways for different development needs
Choose between a next-generation hydrocarbon platform for future PEM electrolyzer concepts and a proven low-loading PFAS-based CCM for reliable benchmarking, validation and customized integration.
Hydrocarbon CCM
For teams developing the next generation of PEM electrolysis.Our hydrocarbon-based PEMWE platform targets customers looking for technical differentiation beyond conventional PFAS-based systems.
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High performance
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>5000h operation demonstrated
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Low IrOx-loading: 0.4 mg/cm²
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Total area: up to 15x15 cm²â€‹
Development-stage product for partners willing to co-develop and validate emerging material systems.
Low-Iridium CCM (PFSA-based)
A proven reference CCM with high reproducibility and flexible geometry.
Designed for customers who need reliable, repeatable components for benchmarking, calibration and stack development.
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Customized configuration of membrane, catalyst and ionomer - upon request
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Low IrOx-loading: 0.2 mg/cm²
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Total area: up to 15x15 cm²
Fuel cells
Advanced membrane-electrode assemblies for efficient and durable fuel cell operation.
Our portfolio ranges from customizable intermediate-temperature PEMFC CCMs to fully integrated HT-PEMFC MEAs for demanding operating environments.
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Operation from 80–120 °C
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0.6 V at 2 A/cm² at 30% RH
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CCM, 5-layer and 7-layer MEA formats
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Active area up to 400 cm², larger upon request
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Validated on full-size test platforms at a leading automotive OEM
Bridging the temperature gap for heavy-duty fuel cells.
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Higher-temperature PEMFCs from one side. A broader HT-PEMFC operating window from the other. Both targeting the operating conditions required by next-generation heavy-duty applications.
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Operation from 120–180 °C
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0.6 V at 2 A/cm², 0% RH operation
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~10 µV/h degradation over 500 h load-cycle
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7-layer MEA
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Standard formats: 5, 25 and 45 cm²
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Pressure from ambient to 250 kPa(g)
HT-PEMFCs combine simplified water management, higher fuel tolerance and valuable high-temperature heat, making them well suited for continuous, high-reliability applications such as data centers.
From aviation to stationary power.
Beyond Hydrogen
The same electrochemical engineering principles that enable advanced hydrogen technologies can also unlock new solutions for chemical manufacturing, carbon management and resource recovery. ionysis supports customers across multiple electrochemical markets with customized membrane-electrode assemblies and electrodes.
COâ‚‚ Conversion
CCMs and MEAs for COâ‚‚ electrolysis and carbon utilization.
Emerging Applications & Power-to-X
Customer-specific electrochemical components for novel industrial processes, such as green ammonia
Recovery & Water Treatment
Electrodes for water treatment, selective separations and critical material recovery for gaseous and liquid streams
Electrochemical solutions for emerging applications.
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New electrochemical technologies often start from one of two points:
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either promising materials still need to be turned into reliable, manufacturable components, or
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established component concepts have reached their performance limits.
Our experience across AEM and PEM systems gives us a broad toolbox of membrane chemistries, catalysts, electrode architectures and integration levels. We use these building blocks to adapt the electrochemical core to new requirements and overcome existing limitations.
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The examples shown represent technologies we have already supported in paid customer projects. If your application is not listed, talk to us about your challenge.
Our first scaled CO2 electrode fabriacted on the roll-to-toll tool late 2025
From material innovation to industrial deployment
Development services for electrochemical technologies.
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Whether you are developing a new catalyst, membrane, electrode architecture or complete electrochemical system, ionysis provides the capabilities to evaluate materials, develop components, validate performance and transfer promising concepts into scalable manufacturing processes.
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ionysis provides electrochemical R&D, coating, testing, scale-up and engineering services for companies developing catalysts, membranes, electrodes, CCMs, MEAs and other functional electrochemical components.
Our experience from bilateral development projects with OEMs, chemical companies and material suppliers allows us to support projects from first material assessment to pilot-scale production.
understand & validate → manufacture & scale → automate & learn.
R&D services and testing
Turn new materials and component concepts into validated electrochemical performance.
We characterize and benchmark catalysts, membranes and electrode materials and integrate them into customized CCMs and MEAs.
Using fuel cell, electrolyzer and electrochemical testing, we evaluate performance, durability and degradation mechanisms.
This helps customers identify technical limitations, optimize component design and reduce development risk.
Validate faster.
​Coating & Scale-Up Services
Develop, transfer and scale porous functional coatings on flexible substrates.
We develop and manufacture porous functional coatings on flexible substrates for electrochemical and other advanced applications.
Projects can start with rapid proof-of-concept spray coating and progress through slot-die process development to roll-to-roll pilot production in our ISO Class 5 environment.
We support customers with coating formulation, process optimization, scale-up and end-of-line quality control.
Scale more reliable.
Engineering & Data Services
Build smarter test systems and turn experimental data into faster development decisions.
We design and build cost-efficient automated test systems for electrolysis, fuel cells and other electrochemical applications, combining hardware, control software and data acquisition. We structure experimental data and develop analysis workflows for traceable electrochemical testing. Advanced data analysis, automation and AI models help turn complex test results into actionable engineering insights.
Decide smarter.
Whether you are developing a new catalyst, membrane, electrode architecture or complete electrochemical system, ionysis helps accelerate the path from laboratory innovation to industrial deployment.