100% active material
Pure silicon, not a blend. The full capacity of silicon, not a diluted fraction of it.
01Prelithiated pure-silicon anodes
100% silicon. Net 0% first-cycle loss.
Pure-silicon anodes — 100% active material — first-cycle efficiency up to 100%, optional with up to 5% extra lithium. Available as anodes, material rolls and pouch cells.
100%
silicon active material
100%
FIRST-CYCLE EFFICIENY
100%
NON-CHINESE PRODUCTION
−75%
CO₂ PER TONNE
Prelithiated pure-silicon anodeSamples available
100%Pure silicon active material
Net 0%First-cycle loss
5%Extra lithium buffer
LCO
compatible
LFP
compatible
NMC
compatible
02The problem
Nobody ships anodes with 100% active-material silicon.
Silicon holds roughly 10× the capacity of graphite, but it loses up to ~20% of its lithium on the first cycle. Other companies do supply silicon material — but always with an initial capacity loss, so the capacity everyone talks about never reaches the cell. Nobody ships anodes made of pure silicon that last. We do.
~10×
silicon anode capacity vs. graphite
100%
first-cycle efficiency
−75%
CO₂ per tonne of silicon material — 2.17 t CO₂e vs. 10.6 t for average metallurgical silicon
03The product
The numbers that make our pure silicon anodes different.
Net first-cycle loss: 0%
Net irreversible first-cycle loss is zero, with first-cycle efficiency up to 100%. The cell starts at full capacity.
Up to 5% over-lithiation
Up to 5% extra lithium provides a controlled buffer for full compensation and 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.
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)
05Order samples
Order your first pure-silicon samples.
Prelithiated pure-silicon anodes, 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.
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.
09Why 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.
10Team
A Belgian–Japanese team.
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.
- What does 100% active material mean?
- It means the anode is pure silicon, not a blend. 70.energy's prelithiated anodes use 100% silicon as the active material, with no graphite dilution — so the cell gets the full capacity of silicon instead of a diluted fraction of it.
- How is net first-cycle loss 0%?
- 70.energy's pure-silicon anodes achieve net zero irreversible loss in the first cycle and first-cycle efficiency up to 100%, so the cell starts at full capacity.
- Why up to 5% over-lithiation?
- The anode contains up to 5% extra lithium. This controlled buffer fully compensates the first-cycle loss and supports stable performance from cycle one.
- How do I order samples and what do I get?
- Request first samples at 70.energy/samples. You choose the sample type — prelithiated pure-silicon anode material, coin cells or small pouch cells — and tell us your cathode chemistry, cell format, application and target volume. We come back within 2 business days to scope the samples.
- 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, net 0% first-cycle loss and up to 5% over-lithiation buffer, with first-cycle efficiency up to 100%. Anodes, coin cells and pouch cells can be ordered as samples today, with a route to volume supply or a joint mass-production project.
—Order samples