ProtiumTech
ProtiumTech provides membrane-free decoupled water electrolysis systems that separate hydrogen and oxygen production in time using a solid-state WO₃-based REDOX electrode. This architecture eliminates fragile membranes, enables repeated start-stop operation, and allows the energy-intensive charging stage to be prioritized during low-cost electricity periods, with hydrogen purity up to 99.999%.
- Clean Technology
- Energy
- Chemical Technology
- Hardware
Funding
Raised to date
€120KRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.
Est. $130.8Kacross 1 round
€120K · Grant
Announced Jan 2025
Disclosed cumulative: $130.8K
Founders
Founder details are not available yet.
Product
Problem
Conventional water electrolysis systems rely on fragile membranes to separate hydrogen and oxygen gases, increasing capital costs and limiting operational flexibility. These systems also struggle to integrate efficiently with intermittent renewable energy sources due to slow response times and degradation from frequent cycling.
Solution
ProtiumTech provides decoupled water electrolysis systems that separate hydrogen and oxygen production through REDOX-mediated charge and discharge cycles, eliminating the need for expensive and fragile membranes. The technology operates in two steps: first, water splitting charges a WO₃-based REDOX mediator while releasing oxygen; second, hydrogen is released during the discharge cycle. This architecture enables the system to charge when energy is cheap and generate hydrogen on demand with high efficiency, achieving 70% of energy consumption during the OER charging stage and shifting up to 38.8 kWh/kg of hydrogen production to low-cost electricity periods. The modular design scales from kW to MW systems by adding electrode modules, and integrated electrode assemblies reduce component count per cell from 132 to 10, simplifying manufacturing and lowering balance-of-plant requirements.
Target Audience
Primary customers are industrial decarbonization projects, renewable energy operators, and hydrogen infrastructure developers seeking flexible, low-cost green hydrogen production systems that integrate with intermittent power sources.
Features
- REDOX-mediated decoupled electrolysis that separates H₂ and O₂ production by time and space, eliminating membranes
- Solid-state WO₃-based auxiliary electrode enabling reversible proton intercalation and deintercalation during charge/discharge cycles
- Modular architecture with multiple electrode boxes connected electrically in series, each containing five REDOX electrode assemblies and four catalyst electrodes within sealed polymer housings
- Compact titanium-based electrode assemblies reduced from 132 to 10 components per cell for improved manufacturability
- Automated valve system with dedicated gas purification train including cooling, coalescing filtration, catalytic deoxygenation, and TSA drying units achieving 99.999% hydrogen purity
- Three-section electrolyte reservoir design with vacuum purging between operational cycles to remove residual gases and improve safety
- On/off cycling capability without active component degradation for flexible renewable energy integration
- In-house manufacturing of WO₃-based REDOX electrodes using proprietary water-based slurry formulation, replacing conventional NMP-based solvent processing