high-energy batteries are on with nano-porous silicon

Demand for high energy batteries is on the rise

With climate change a key issue in the world today, electrification of mobility is rising fast. The demand for battery power is growing, but standing in the way of wide scale EV adoption are restricted range, charging speed and cost. We believe our specialty silicon has the answers.

Silicon is the way forward

Today's Li-ion batteries use graphite as an active anode material, an approach which can not keep up with market demand. Silicon-dominant batteries are lower in cost and lighter - up to 50kg weight reduction per car battery pack, ready to power the next generation of EV batteries.

Challenge: silicon has up to 10x higher capacity but is more likely to swell

Silicon has long been recognised as a promising active anode material due to its higher specific capacity than graphite. Until now, the transition to silicon was hindered because silicon swells and breaks when charged.

Solution: nano-porous silicon

We invented a low-cost process to mass manufacture structured silicon particles that don't swell and break thanks to nanoscale pores. This unique specialty silicon is purpose-designed for silicon-dominant application in high performance Li-ion batteries.

Nano-porous silicon for high-energy batteries


Our specialty silicon ensures higher energy density and faster charging; it solves the swelling problem, making silicon-dominant anodes (>80% silicon) a reality.


This is the low-cost solution compatible with existing production lines that the EV industry needs – as currently verified by R&D managers of more than a dozen leading automotive and battery manufacturer brands.


Our nano-porous silicon is now in production for industrial application in our in-house facility, ready to scale up.

Mario Marinaro

Team Leader Batteries at ZSW

We have tested E-magy's silicon anodes and seen a negligible pouch cell thickness variation of <5% after 100 charging cycles, with an 80% wt silicon anode.
ZSW (Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg) is one of the leading institutes for applied research in battery technology.

Prof. Marnix Wagemaker

Head of Battery Research Group at Delft University of Technology

The porous silicon structure E-magy has developed mitigates the volume changes and addresses one of the biggest challenges to reach a long cycle life.
The TU Delft Battery Research Group supports developing safe and high performance energy storage in batteries worldwide.

Smarter through collaboration

These organisations are on with Silicon.

Inhouse- production
cost efficient and scalable

Our nano-porous silicon is produced in our own, fully operational production facility near Amsterdam. The machinery covers 1200 square meters and operates at an industrial scale, can run 24/7 and is capable of producing up to 25 tons a year.


We use an efficient silicon crystallization process with industry-standard post-processing steps. Next to that, we have a well controlled quality specification in place.


Our nano-porous silicon is compatible with existing lithium-ion battery manufacturing processes and installed factory equipment. This makes it a low risk and easy to adopt solution.


The facility is capable of manufacturing 25 tons of nano-porous silicon per year. We have designed the process to be easily scalable, with a capacity per line of 300 tons per year.

Interested? We help you advance

We would love to set up a call, a meeting or give you a personal tour of our factory.
Make an appointment

Seeing is believing

Would you like a sample of our nano-porous silicon? Please let us know and we'll get in touch with you.
Request sample