SiNTL™ Clears 550 mAh/g Milestone – Optimised Formulations Reaching 600 mAh/g
We have reached a significant milestone in our SiNTL™ silicon nanoparticle battery program, with SiNTL cells now exceeding 550 mAh/g across all tested configurations. Optimised formulations are recording above 600 mAh/g on initial cycles – more than 50% higher than conventional graphite anodes and approximately 20% above current commercial silicon-enhanced anode benchmarks.
What the results show
Testing of our latest SiNTL cell configurations produced strong results across three variants. Two variants exceeded 600 mAh/g on initial cycles, stabilising above 550 mAh/g at higher charge/discharge rates. A third variant, formulated with lower silicon content, achieved just under 600 mAh/g on initial cycles, stabilising at just over 500 mAh/g at higher rates.
The reduction in capacity at higher rates reflects the inherently lower electrical conductivity of silicon — a well-understood characteristic that does not affect peak capacity performance. Cycle life testing is underway, and results will be reported as they become available.
We regard these results as confirmation that SiNTL’s core material performance is on a credible commercialisation trajectory.
The path to consistent 600 mAh/g
Our development team at George Washington University, led by Professor Michael Wagner, is now evaluating carbon-enhanced SiNTL formulations to sustain 600+ mAh/g across a wider range of charge/discharge rates. Carbon coating is a proven technique for improving silicon conductivity in lithium-ion battery anodes, and we expect results in the near term.
Why energy density matters
Standard graphite anodes used by manufacturers including Samsung, Panasonic, CATL and LG are generally limited to around 372 mAh/g. SiNTL is designed as a drop-in upgrade – compatible with existing lithium-ion manufacturing processes without retooling or process redesign.
Higher-capacity SiNTL battery technology targets demanding applications where energy density is a critical design constraint: drones and UAVs, electric vehicles, spacecraft and satellites, military systems, robotics and industrial power tools.
Chief Technology and Operations Officer Peter Yaron said: “SiNTL cells are now surpassing 550 mAh/g across our test configurations, with our best-performing cells recording above 600 mAh/g at slow rates. That gives us real confidence in the material. The carbon enhancement work is the path to making 600 mAh/g the consistent operating baseline.”
SiNTL is developed under an exclusive global licence with George Washington University and is produced via a low-temperature, single-step synthesis process with approximately 97% demonstrated yield.