Introducing

stack.1

The open-format vanadium redox flow battery stack built for researchers, hobbyists and startups. Order now to enable your electrochemical journey!

🔎 View stack.1
stack.1 VRFB Stack

Why stack.1?

⚗️
Research-Ready

Designed around a 25mm × 25mm active area - small and convenient. Every component is individually available so you can swap, test, and iterate.

🔩
Fully Modular

Graphite current collector, copper plates, Nafion membrane, carbon felt electrodes, silicone gaskets can be purchased independently. Enjoy the freedom to mix and match custom configurations.

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Early Access

We're in the market research phase. Register your interest and you'll be first in line when production starts. Your input shapes what we build.

V²⁺/V³⁺ | VO²⁺/VO₂⁺Cell Chemistry
25 × 25 mmActive Area
~1.4 VOpen Circuit Voltage
InterdigitatedFlow Field
Nafion PEMMembrane

What's In The Stack

Every component that makes up 'stack.1' is also available individually.

Graphite Current CollectorGraphite Current Collector Copper PlateCopper Plate Nafion MembraneNafion Membrane Carbon Felt ElectrodeCarbon Felt Electrode Silicone GasketSilicone Gasket

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