Organic flow battery technology

Our organic redox flow battery is the first truly green battery technology that’s ready to scale. Learn about the basic principles and explore the benefits.

We make the battery the world’s been waiting for

For the green revolution to succeed, we need powerful electric energy storage systems that scale. But until now, there have been few real options. Commercially available battery  solutions carry a high price tag. They are also plagued by limited capacity, longevity and efficiency, not to mention the use of toxic and critical materials, making them unsafe and difficult to source.That’s why our organic redox flow battery is a first. It’s more efficient, scalable and affordable than any other energy storage battery on the market, liquid or solid. Plus, it’s made for a long application lifetime and minimal maintenance. Green energy demands radical new concepts for energy storage. We’re disrupting the future of electricity storage with a truly green redox flow battery.

5 facts about our organic batteries

Their unique chemistry and design make our organic flow batteries ideally positioned to support the global energy transition. Here’s why they are a sound solution for business, society and the planet. 

  • Ultra-scalable 

    Separate tanks and stacks make it possible to scale power and capacity independently, for highly customizable bulk storage units. 

  • Affordable

    Our technology relies on abundant, low-cost carbon-based molecules instead of rare or conflicted materials.

  • Safe

    All of our battery parts are free of critical, flammable or explosive materials.

  • Long-lasting 

    Carbon-based electrolytes have a long lifetime and can be maintained to ensure a very high cycle life of the battery. 

  • Recycable

    Organic electrolytes can be fully recycled. 

What is an organic redox flow battery?

Redox flow batteries are batteries that store electrical energy in liquid electrolytes, and not in solid electrodes. Those electrolytes are stored in external tanks. During charging and discharging, they are pumped through the battery stacks in a constant “flow”. 

Our organic redox flow batteries take a novel approach: Instead of metal ions, an organic redox flow battery uses carbon-based molecules for its electrolytes.
Why carbon? It’s simple. Certain carbon-based molecules have the intrinsic ability to be oxidized and reduced, or charged and  discharged. They are the essential element in “redox” reactions that have been powering all living cells, for billions of years. 

Using organic electrolytes makes our redox flow batteries into a more efficient, long-lasting and sustainable electricity storage technology. Besides innovative electrolytes, our organic batteries also feature a uniquely scalable design. The result: a high-performance organic flow battery that’s built for bulk storage applications. 

How organic flow batteries work

Our redox flow batteries are a combination of innovative biochemistry and smart engineering. Get an inside glimpse at how they work.

The organic flow stack – the power unit

Our organic battery stacks consist of serially connected half cells with the following components. 

  • Electrodes

    Material and surface of the electrodes as well as the kinetics of the redox process at the electrode surface determine the performance of the battery.

  • Membranes

    Selectively allow ion migration to enable charge equalization but prevent electrolytes from commingling.

  • Current Collectors

    Connect the stack to the grid

Energy converter stacks are at the heart of our modular redox flow battery technology. Both reduction and oxidation, the core electrochemical processes, take place in these stacks, although physically separate from each other. The battery output depends on the material and surface area of the electrodes, as well as the kinetics of the redox process. Increasing the stack size yields a higher output.

Organic flow batteries versus lithium-ion and hydrogen 

Compared to lithium-ion batteries and hydrogen batteries, our organic flow batteries are the ideal solution for large-scale, multi-hour energy storage. They offer superior efficiency and safety and low maintenance.

CMBlu organic flow batteries

Lithium-ion

Hydrogen

Applications

Large stationary electricity storage

Mobile applications, electric vehicles, small and mid-size electricity storage

Long-term to seasonal energy storage 

Cycle life

Potentially unlimited with proper maintenance

~ 3,000 charging cycles

Not applicable 

Efficiency

~ 90%

~ 90%

~ 40%

Battery capacity

Up to the GWh range

Multi MWh range 

Seasonal storage up to the TWh range

Safety

check icon High. Neither flammable nor explosive materials

Error icon Limited. Substantial effort required to ensure safe operation. 

Error icon Limited. Substantial effort required to ensure safe operation.

Absence of critical or rare materials

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Error icon

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Where organic flow batteries are used

Organic flow batteries are easily adaptable to the requirements of different sectors. 

Renewable power generation

Renewables like solar or wind parks generate power intermittently and need large-scale energy storage solutions.

  • Renewable power generation

  • Industrial sites

  • EV charging infrastructure

  • Microgrids

  • Transmission and distribution

  • Maritime