100% active material
Pure silicon, not a blend. The full capacity of silicon, not a diluted fraction of it.
01Prelithiated pure-silicon anodes
Prelithiated pure silicon. Full-cell first-cycle efficiency up to 99%.
We build the lithium a silicon anode loses on its first cycle straight into the anode — lifting first-cycle efficiency from silicon's ~80% to up to 99% (full-cell), so the cell starts near full capacity. A prelithiated pure-silicon anode (100% silicon active material), delivered drop-in for LFP, LCO and NMC. Available as anode sheets, material rolls, coin cells and small pouch cells.
100%
SILICON ACTIVE MATERIAL
Up to 99%
FULL-CELL FIRST-CYCLE EFFICIENCY
100%
NON-CHINESE PRODUCTION
−75%
CO₂ PER TONNE
Every first order includes a free electrolyte consultation for your cell chemistry — no obligation.
For cell manufacturers, Li-ion capacitor makers and OEMs in robotics, spacetech and drones.
Prelithiated pure-silicon anodeSamples available
100%Pure silicon active material
Up to 99%Full-cell first-cycle efficiency
5%Extra lithium buffer
LCO
compatible
LFP
compatible
NMC
compatible
02The problem
Silicon's problem isn't capacity. It's the first cycle.
Silicon holds roughly 10× the capacity of graphite — but it loses about 20% of its lithium on the very first charge, forming the SEI. That's why most suppliers dilute silicon into graphite, and why even pure-silicon anodes ship without that lithium replaced. We prelithiate: the lost lithium is built into the anode, so the cell starts near full capacity.
~10×
silicon anode capacity vs. graphite
Up to 99%
full-cell first-cycle efficiency
−75%
CO₂ per tonne
03The product
The numbers that make our pure silicon anodes different.
Full-cell first-cycle efficiency: up to 99%
Prelithiation compensates the silicon anode's large first-cycle loss, lifting full-cell first-cycle efficiency to up to 99%. The small remaining loss is cathode- and electrolyte-limited, as in any lithium-ion cell.
Up to 5% over-lithiation
Up to 5% extra lithium provides a controlled buffer and supports stable performance from cycle one.
−75% CO₂ per tonne
Our silicon material produces 2.17 t CO₂e per tonne — versus 10.6 t for average metallurgical silicon. A measured sustainability advantage, not a marketing claim.
Manufacturing advantage
~50% shorter forming & aging — prelithiation cuts cell conditioning time by up to half.
Available formats
Anode sheets, material rolls, coin cells and small pouch cells. Compatible with LCO, LFP and NMC.
Download technical datasheet (PDF)Technical background is available at pre-lithiation.com — prelithiation technology & equipment
04Proof
Measured on pure silicon.
Data, not adjectives. Every figure below is measured.
>500 cycles
demonstrated, stable capacity
LFP / pure silicon · A/C = 4 · >1000 cycles under test
~2% @ 500 cycles
degradation
Achieved across LFP, LCO and NMC cells
1.7×
proven flight time increase, same cell weight
Drone prototype · LCO / pure silicon
TRL 5–6
today
Next milestone TRL 6, then pilot line
Cycle stability — capacity retentionX: cycles · Y: discharge capacity (mAh/g)
Full-cell normalized · LFP / pure silicon · A/C = 4.
05Order samples
Order your first prelithiated pure-silicon samples.
Prelithiated pure-silicon anode sheets, material rolls, coin cells and small pouch cells — for cell manufacturers, Li-ion capacitor makers and OEMs in robotics, spacetech and drones. Qualified to your cell, your duty cycle and your line.
Samples are step one. From a successful evaluation we scale to volume supply — or build a joint mass-production project with you.
Free with every order
A free electrolyte consultation matched to your exact cell chemistry (LFP, LCO or NMC) — so your cells perform from the first build. No obligation.
Request first samples
06Scale
From first samples to volume supply.
Volume supply
Once your cells qualify, we scale delivery to production volumes through material supply and licensing.
Joint mass-production project
Prefer to industrialize together? We co-develop a dedicated line or shared program to bring pure-silicon anodes to series production.
07Supply options
Start with samples. Scale with confidence.
01 · Samples
Evaluate prelithiated pure-silicon anodes, coin cells or small pouch cells with your chemistry.
02 · Volume supply
Move from a successful evaluation to production volumes, including ready-to-use material rolls.
08Why we win
Japanese science. European industrialization. Global scale.
Foundational IP
Foundational technology exclusively licensed. Patents granted in JP, US and CN; EP pending; plus PCT applications.
Built for Europe
Japanese science, European industrialization, global scale — no China dependency in the anode supply chain.
Capital-efficient
Integration into and/or extension of your existing battery cell production lines.
−75% CO₂ per tonne
Our silicon material produces 2.17 t CO₂e per tonne — versus 10.6 t for average metallurgical silicon. A measured sustainability advantage, not a marketing claim.
09Team
Japanese materials science. European industrialization.
Japanese materials science meets European industrialization. Together we build and ship prelithiated pure-silicon anodes — through a non-Chinese supply chain.
For more about the team, the science and the production technology behind our anodes, visit pre-lithiation.com.
Founder
Markus Schiemann
Founder — commercialization & European industrialization.
Battery Tech Advisor
Dr. Masaharu Satoh
Battery-chemistry authority with hundreds of publications and articles.
Marketing & Sales Asia Advisor
Nobu Tanaka
Go-to-market across Asia.
Leadership Advisor
Klara Vandenbosch
Leadership & organizational scale-up.
- What does 100% active material mean?
- The active material is 100% silicon — there is no graphite in the blend. As in any lithium-ion electrode, the coated film also contains a small amount of conductive additive and binder (the electrode is about 80–85% silicon by weight). '100%' means the active material is entirely silicon, not a silicon-graphite mix — so the cell gets the full capacity of silicon instead of a diluted fraction of it.
- How high is the first-cycle efficiency?
- 70.energy's prelithiated pure-silicon anodes reach full-cell first-cycle efficiency of up to 99%. Prelithiation compensates the silicon anode's large first-cycle loss; the small remaining loss is cathode- and electrolyte-limited, as in any lithium-ion cell.
- Why up to 5% over-lithiation?
- The anode contains up to 5% extra lithium. This controlled buffer compensates the silicon anode's initial lithium loss and supports stable performance from cycle one.
- How does 70.energy's prelithiation compare to other methods?
- Chemical prelithiation adds lithium-rich additives to the electrolyte — effective, but it modifies the electrolyte chemistry and must be tuned per cell design. Electrochemical prelithiation pre-charges the anode in a separate step, adding equipment and process complexity. 70.energy integrates prelithiation into the anode production process: the anode arrives prelithiated, the cell maker assembles normally, no electrolyte modification, no extra assembly step. Compatible with LFP, LCO and NMC.
- How do I order samples and what do I get?
- Request first samples at 70.energy/samples. Available formats are anode sheets, material rolls, coin cells and small pouch cells. Every first order includes a free electrolyte consultation matched to your LFP, LCO or NMC chemistry. We reply within 2 business days.
- What volumes can you supply?
- Samples are step one. From a successful evaluation we scale to volume supply at production scale — or set up a joint mass-production project in which we industrialize a dedicated line or shared program with you.
- Where can I learn about prelithiation equipment?
- Technical information about prelithiation, production integration and the corresponding equipment is available at www.pre-lithiation.com. 70.energy focuses on supplying ready-to-evaluate anodes, cells and material rolls.
- Which chemistries are compatible?
- The anodes are compatible with LCO, LFP and NMC cathodes. Cycle stability has been measured across all three: 500 cycles with roughly 2% degradation on LFP, LCO and NMC cells.
- What does 70.energy do?
- 70.energy supplies prelithiated pure-silicon anodes: 100% silicon active material, full-cell first-cycle efficiency up to 99% and up to 5% over-lithiation buffer. Anode sheets, material rolls, coin cells and small pouch cells can be ordered as samples today, with a route to volume supply or a joint mass-production project.
—Order samples