Performance you can count on
SCC55® delivers long cycle life, high energy density, and fast charging — validated by customers worldwide and independently verified by third-party testing.
Cycles
1,500–3,000+
Charge cycles across 20+ commercial customer deployments
Energy
400 Wh/kg
Energy density demonstrated, 100% SCC55® anode
Time
90 sec
0–100% charge in Molicel 21700 cell with SCC55®
Density
43%
Energy density increase vs. graphite baseline
Scaffold Prime®
The architecture that solves the expansion problem
Silicon stores far more energy than graphite — but it expands dramatically during charging. That expansion cracks the material, destabilizes the electrode, and reduces capacity. Most silicon architectures can’t overcome this at commercial scale. Scaffold Prime® solves it by building the answer into the particle itself.
Step 1
Carbon scaffold
A porous hard-carbon scaffold is synthesized with precisely tuned internal void space — cavities engineered to accommodate silicon’s expansion.
Step 2
Silicon deposition
Silicon is infused into the scaffold via chemical vapor deposition, filling the void space without overfilling it. The silicon never contacts the electrolyte directly.
Step 3
Inward expansion
During charging, silicon expands inward into the pre-built void space, not outward against the electrode. The carbon shell stays intact. The SEI stays intact. Cycle after cycle — even at high charge rates.
Cycle life
A new benchmark for the whole industry
Cycle life is one of the most critical measures of battery performance — it determines total cost of ownership across EVs, eVTOLs, and grid storage. Data from 20+ Group14 customers worldwide has reset the industry standard.
Longevity
1,500–3,000+
Charge cycles across 20+ commercial customer deployments
Edge
1,000 cycles
The prior industry high-performance benchmark, now surpassed
Stability
<4%
Cell-level expansion — at parity with graphite, no external compression needed
Energy density
More energy. Same pack. Less weight.
Energy density determines how much a battery can store in a given volume or weight — and it directly sets the range, payload, or runtime an application can achieve. Scaffold Prime®’s architecture enables energy density gains that conventional silicon–graphite blends cannot match.
Proven
400 Wh/kg
GEN4 target, 100% SCC55® anode, currently in validation.
Target
370 Wh/kg
Achieved in GEN3 20-Ah pouch cells, independently verified.
Gain
43%
Energy density increase vs. graphite baseline, GEN3 cells.
Fast-charging performance
From hours to minutes. Without the degradation.
Fast charging puts maximum stress on the anode — lithium must insert rapidly, and structural integrity must hold under repeated thermal and mechanical cycling. Scaffold Prime®’s internal void space absorbs the stress that cracks competing silicon structures.
Speed
90 seconds
0–100% charge demonstrated in Molicel 21700 cell with SCC55®.
Power
4C–5C continuous discharge
Demonstrated in Sionic 20-Ah pouch cells without accelerated degradation.
Advantage
No lithium plating
Amorphous silicon inserts lithium in any direction at high current; no preferred axis means no plating ceiling that limits graphite charge rates.
Customer validation
Trusted by innovators
20+ customers. Millions of devices shipped. SCC55® is already powering EVs, eVTOLs, AI-enabled devices, and grid storage systems worldwide — with 10 GWh of production capacity online today.
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