From its base in Arnhem, the Netherlands, Elestor is redefining large-scale electricity storage with its hydrogen–iron flow battery technology.
By using hydrogen and iron, two abundant, low-cost elements, the system delivers efficient, safe, and circular long-duration energy storage with active materials that can be reused indefinitely. Its architecture decouples power and capacity, allowing energy volumes to scale independently and enabling storage durations from 8 to 130 hours. The iron-based capacity component is extremely inexpensive, making truly large-scale long-duration storage economically viable.
With circular materials, scalable design, and long-duration capability, Elestor is setting a new standard for sustainable storage that supports renewable energy integration, strengthens industrial resilience, and accelerates the transition to a zero-carbon future.
Main tasks in SPACER
At Elestor, the PhD candidate will receive the support, coaching and on-the-job training, as well as full access to our laboratories and pilot production facilities. Together we develop and evaluate the next generation of porous electrodes for hydrogen-iron flow batteries, by optimizing the mass transport – surface area trade-off and by increasing the lifetime of the electrocatalyst on the hydrogen side.
»At Elestor, we are committed to pushing the boundaries of long-duration energy storage, and SPACER provides a unique opportunity to accelerate innovation in porous electrode design. By collaborating with leading academic and industrial partners, we can combine cutting-edge research with real-world application, ensuring that breakthrough materials rapidly translate into scalable, cost-effective battery technologies. Our participation stems from a shared drive to make sustainable, high-performance energy storage a reality for the global energy transition.«