The Heat2Battery project is an EIC Pathfinder Open project funded under the Horizon Europe programme that is on a mission to redefine how we recover, store and use energy.
At the heart of our innovation is a hybrid All-Solid-State Thermal Battery (ASSTB) — a brand-new type of thermal cell that works without liquid components, making it safer, more stable, and able to operate across a broader range of temperatures.
The current thermal batteries can only store very little energy and work in narrow temperature ranges.
Works reliably in a broad temperature spectrum
Stays stable over time
We’re tapping into temperature-driven changes in electrode materials to make this happen, turning waste heat into a reliable source of stored energy.
Heat2Battery is not just a new battery. It’s a whole new way to think about energy.
Heat2Battery is more than just a bold idea — it’s a mission to prove that we can design solid-state thermal batteries that are fast, stable, and efficient. By precisely tuning how materials behave under different temperatures, we’re opening the door to smarter energy storage and conversion.
We’ll build model battery cells that carefully use chosen materials. These cells will be optimized to:
We’re developing a solid-state electrolyte that lets protons flow quickly between the battery’s electrodes. The electrolyte must perform reliably from room temperature up to charging heat levels.
We’ll apply cutting-edge analysis tools to understand and refine our materials, feeding this knowledge back into the design process.
The final step is showing it all works — a working thermal battery that:
