Projects // VARZELL
Schematic structure of a vanadium redox flow battery

VARZELL

Vanadium redox flow batteries are recyclable, environmentally friendly, and extremely durable. The development of an industrial version would facilitate the storage of renewable energy.

Project objective

The transition to renewable energy requires new storage systems. Vanadium redox flow batteries have some advantages when compared to other common battery types in use. The project’s objective is to contribute to the development of an industrial version of this type of battery, which would facilitate a higher self-use of electricity produced in photovoltaic systems.


Project innovation

Currently, the most common method to store energy from volatile renewable sources, such as the wind or the sun, is to turn it into electrochemical energy using lithium-ion or lead-acid batteries. Vanadium redox flow batteries have some advantages in comparison to the currently established battery types. Among them is a higher durability, made possible by considerably higher cycle stability. Additionally, the electrolyte can be reused, which makes the batteries recyclable and environmentally friendly.

Functionality of hydraulic compression and CAD model of the assembled short stack
Functionality of hydraulic compression and CAD model of the assembled short stack

The project uses a modular concept, based on hydraulic compression, which allows for quick cell replacement within the battery assembly.

Information on funding and further project participants

Funding code: EFRE-0800546

Leitmarkt Agentur.NRW
Eu nrw
HAMCO Kunststoffverarbeitungs GmbH
Efre nrw
CMS Green Energy GmbH
Land nrw