Project description
Energy storage for a sustainable future
As the global demand for renewable energy escalates, the intermittent nature of sources like wind and solar poses a challenge: storing excess energy for times of low production. Redox flow batteries show promise for large-capacity stationary storage, but hurdles such as mass transport limitations and slow kinetics hinder their efficiency. In this context, the ERC-funded RECHARGE project will marry pulsatile flow with precisely structured 3D electrodes, aiming to elevate redox flow battery performance to new heights. With in-depth understanding and advanced engineering, the project aims for a power density of 1 000 mW/cm² and a roundtrip efficiency exceeding 85 %. RECHARGE heralds a new era in energy storage efficiency and capacity.
Objective
Electrochemical energy storage is essential if we wish to increase the usage of intermittent energy sources such as windmills and solar panels. With intermittent energy sources it is crucial that energy can be stored to meet demand when production is too low. When targeting stationary storage with large capacity and long storage times, redox flow batteries stand out. However, in order to compete with other energy storage technologies several fundamental challenges remain to be resolved. Mass transport limitations, cell resistivities, pressure losses and slow kinetics still pose major barriers that result in unsatisfactory energy efficiencies and power densities.
In RECHARGE, I propose an innovative and disruptive approach. By combining for the first time pulsatile flow with precisely structured 3D electrodes the battery’s performance can be accurately steered towards improved battery hydrodynamics, allowing to surpass state-of-the-art in terms of maximum attainable power density, diminished efficiency losses and enhanced energy capacity. The combination of targeting an in-depth understanding into how reagent, product and electrolyte transport is governed within the redox flow battery by using in operando characterisation and having perfect control over the electrode geometry and flow field design through advanced engineering approaches, will result in unprecedented control over the mass transport and reaction environment. This will yield a significantly improved redox flow battery with a power density of 1000 mW/cm² and a roundtrip efficiency above 85%.
RECHARGE will demonstrate the impact of achieving perfect control over the hydrodynamic and electrochemical characteristics of a redox flow battery and can thus be considered as the first step towards a new generation of redox flow batteries that will completely redesign the electrode structure and fluid control strategies towards strongly improved battery efficiencies.
Fields of science
Programme(s)
- HORIZON.1.1 - European Research Council (ERC) Main Programme
Topic(s)
Funding Scheme
HORIZON-ERC - HORIZON ERC GrantsHost institution
2000 Antwerpen
Belgium