Scalable batteries for a greener future

Our story

Unbound Potential develops redox flow batteries. We do not use a membrane and multiply the ion exchange at the same time through 3D optimization of the interface of both electrolytes. This reduces the costs and at the same time increases the efficiency. 

Our approach is not limited to one cell chemistry, but can be used as a platform technology for a wide variety of electrolytes.

Technology and Vision

Advanced energy storage systems utilizing Redox Flow Batteries (RFB) have the potential for largescale applications due to their ability to scale their storage capacity with the electrolyte tank volume. However, current RFB systems are not competitive with Li-ion technolog​y due to their high initial cost, system complexity, and limited efficiency. Typically, the membrane component of a RFB is the most expensive, accounting for roughly 20-40% of the total expense. Our technology works without the need for those membranes and instead utilizes the inherent interfacial tension between immiscible electrolyte solutions.



Our teams primary focus is the electrochemical converter unit, responsible for the conversion between chemical and electrical energy. We are currently validating and enhancing our fluidic technology on a laboratory scale.


Benefits include higher efficiencies at lower costs.



Breaking Lab

Featuring teams taking part in the Long-Duration Energy Storage Challenge by SPRIND including the Unbound Potential GmbH.

ETH Zurich

The start-​up Unbound Potential has developed a new battery technology for long-​duration energy storage – and received a grant of one million euros for it.

Company Milestones

Sep 2023
First Demonstrator

The first 500 W table-top demonstrator (TRL 4) is developed and presented at a jury of experts. 

Jan 2023

Unbound Potential GmbH is officially born, with headquarters in Thalwil (Zurich).

Nov 2022
Pre-seed Funding

The core team gets assembled and wins the LDES Challenge at SPRIND, unlocking 1M in funding. 

Sep 2021

David decides to use his experience in fluid dynamics to develop a new type of battery in his free time.