01Silicon Alloy Feedstock
Accessible silicon-alloy input selected for scalable processing.
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The science behindPoroSil™.
A porous silicon–carbon architecture engineered to capture silicon’s huge capacity — without the swelling, cracking and fading that have held it back.
1,350 mAh/g capacity5 patents10+ years of R&D
The silicon challenge
Silicon stores more.It also moves more.
Silicon can hold far more lithium than graphite — but it swells dramatically as it charges. Left unmanaged, that movement fractures particles, breaks conductive pathways and makes performance fade fast.
372mAh/gConventional graphite anode
1,350mAh/gPoroSil™ Si–C composite
3.6×More capacity than graphite
Conventional silicon
Cracks & loses contactVolume change shatters particles cycle after cycle.
PoroSil™ particle
Expands into its own poresInternal space absorbs swelling — the particle stays intact.
How PoroSil™ works
Three engineering steps.One stable particle.
Cellark’s proprietary route turns ordinary silicon into a structured composite that is built to survive repeated charge and discharge.
STEP 01 · STRUCTURE
Create internal space
Selective processing forms a porous, micron-scale silicon structure. The pores give each particle built-in room to accommodate lithiation-driven expansion — so it swells inward instead of cracking.
- Porous silicon
- Controlled expansion
- Micron-scale
STEP 02 · SURFACE
Stabilise the surface
Cellark’s proprietary surface treatment is designed to limit unwanted side reactions with the electrolyte and preserve particle integrity over many cycles.
- Proprietary treatment
- Fewer side reactions
- Particle integrity
STEP 03 · CONDUCTIVITY
Build a carbon network
A carbon-coated composite architecture keeps electrons flowing between particles, maintaining reliable particle-to-particle conductivity through repeated charge and discharge.
- Carbon coating
- Reliable conductivity
- Long cycle life
Reported performance
A practical stepbeyond graphite.
PoroSil™ raises usable anode capacity while staying compatible with established lithium-ion manufacturing — even a modest blend makes a measurable difference.
Specific capacitymAh/g
≈ 3.6× the capacity of graphite
+0%Anode capacity with a 10% PoroSil™ blend (vs 350 mAh/g graphite)
≈5–7%Estimated cell-level energy-density gain
≈0Wh/$Incremental active-material energy per added dollar
Up to 0%Cell-level energy potential
Up to 2×
Rate capability observed versus a graphite-only anode — designed for faster charge acceptance and more margin against lithium plating.Cellark laboratory result · full-cell validation required
Illustrative calculation — not cell-test data. Assumes 10 wt% PoroSil™ at 1,350 mAh/g and $25/kg; graphite at 350 mAh/g and $8/kg; NMC cathode at 200 mAh/g and $25/kg; 3.7 V nominal voltage and 1.1 N/P ratio. Actual results depend on cell chemistry, design and operating conditions.
Technical snapshot
Designed for evaluation.Ready for dialogue.
Start with the public product snapshot, then work directly with Cellark on grade selection, electrode recipes and validation conditions.
Request Technical DataPoroSilTMProduct data
- Product
- PoroSil™ Si–C composite
- Format
- Micron-scale anode powder
- Reported capacity
- 1,350 mAh/g
- Cell-level potential
- Up to 30% higher energy density
- Manufacturing status
- Pilot-scale sampling
- Technical package
- TDS, test data & integration support
Manufacturing
Built to scale.Ready for growth.
Our process begins with accessible silicon-alloy feedstock and uses a proprietary route to form, stabilise and integrate porous silicon with carbon.
01
02Selective Leaching
Controlled removal forms the porous silicon architecture.
03Surface Stabilisation
Proprietary conditioning prepares silicon for battery use.
04Carbon Integration
Composite formation supports conductivity and cycling.
Pilot plant & R&D lab
Pilot-scale production.Commercial ambition.
From advanced characterisation to cell assembly, our in-house facilities take PoroSil™ from lab-scale science to pilot-scale material for qualified partners.
