Nanoscale plug-enabled membranes for efficient hydrogen production
This technology is a method for selectively sealing nanoscale defects in submicron-thick ion-conducting membranes, thereby reducing hydrogen crossover while preserving proton conductivity.
Unmet Need: Reliable defect mitigation in ultrathin ion-conducting membranes
Ultrathin proton-conducting oxide membranes offer high efficiency and low resistance for fuel cells and electrolyzers; however, their performance is limited by unavoidable pinholes and microcracks that form during fabrication and operation. These defects cause hydrogen leakage, safety risks, and reduced operational efficiency. Existing approaches do not provide a scalable, post-fabrication method to effectively mitigate defects without impairing ionic transport. A reliable defect remediation strategy is necessary to ensure the safe and high-performance operation of ultrathin membranes in commercial systems.
The Technology: Nanoscale plugs for leakage prevention in ion-conducting membranes
This method selectively plugs nanoscale defects in submicron-thick proton-conducting membranes using an electrochemically-assisted deposition process. Pinholes and microcracks are locally sealed with nanoscale plugs, reducing hydrogen leakage by 5-6 orders of magnitude while leaving intact membrane regions largely unchanged, thereby preserving proton transport and membrane conductivity. This technology enables the use of ultrathin (perfluorosulfonic acid) PFSA-free membranes with improved safety and efficiency, supporting cost-effective, high-performance electrochemical systems for clean hydrogen production.
Applications:
- Proton exchange membrane fuel cells
- Low-temperature water electrolyzers
- Flow batteries
- PFSA-free electrochemical energy conversion devices
Advantages:
- Mitigates defect-driven gas crossover in ultrathin membranes
- Preserves ionic conductivity and membrane efficiency
- Enables safe operation at higher current densities
- Supports CO2 emissions reduction
- Reduces reliance on imported fossil fuels
- Scalable post-fabrication defect remediation
- Cost-effective
Lead Inventor:
Patent Information:
Patent Pending
Related Publications:
Tech Ventures Reference:
IR CU25218
Licensing Contact: Dovina Qu