Silicon-Anode Batteries Outperform Graphite by 39% With 98% Capacity Retention, After 150 Cycles

In This Article:

HPQ Silicon Inc.
HPQ Silicon Inc.
  • 18650 batteries with GEN3 silicon-based materials continue to outperform commercially available graphite batteries by approximately 39%, GEN1 by over 30%, and GEN2 by over 16%, all with only a 2% capacity degradation [1] after 150 cycles

MONTREAL, Sept. 11, 2024 (GLOBE NEWSWIRE) -- HPQ Silicon Inc. (“HPQ” or the “Company”) (TSX-V: HPQ, OTCQB: HPQFF, FRA: O08), a technology company specializing in green engineering of silica and silicon-based materials, is pleased to update shareholders on the latest battery milestones achieved by its France-based affiliate, NOVACIUM SAS ("Novacium").

This latest update confirms the ongoing positive trend observed since the start of the charge-discharge cycle tests on Lithium-ion 18650 batteries made using a blend of graphite and Novacium’s GEN3 silicon-based anode material. The tests demonstrate an approximate 39% overall capacity improvement compared to the graphite benchmark after 150 cycles under conditions simulating real-world usage [2]. Additionally, after 150 cycles, the battery performance is 30% higher than the previous GEN1 material and 16% higher than that of the GEN2 material, with a 2% capacity degradation compared to the graphite benchmark 1% capacity degradation.

“These results continue to confirm our unique position as one of the only producers of advanced silicon anode material that can deliver superior 18650 high-performance batteries,” said Dr. Jed Kraiem, COO of Novacium. “The ability to get these results with our proprietary silicon material under real-world conditions further validates our capabilities and expertise in the domain.”

Enhancing Battery Performance with Silicon-Based Anode Materials

Graph 1 Battery Capacity 150 cycles
Graph 1 Battery Capacity 150 cycles


Graph 1) Average capacity, in milliampere-hours (mAh), of 100% graphite, GEN1, GEN2 & GEN3 batteries over 150 cycle testing [1] (the blue, orange, green and yellow lines).

Graph 1 shows the battery capacity (in mAh) of 18650 batteries made with Novacium GEN3 (yellow line), GEN2 (green line), GEN1 (orange line) materials, and a 100% graphite benchmark (blue line) over 150 cycles. At 150 cycles, the GEN3 batteries maintain an average capacity of 3,793 mAh, outperforming GEN2 at 3,257 mAh, GEN1 at 2,910 mAh, and the graphite benchmark at 2,748 mAh.

This data highlights that GEN3 silicon-based batteries offer approximately 39% more capacity than the graphite benchmark, 30% more than GEN1, and 16% more than GEN2 after 150 cycles.

Silicon-Based Anode Materials with graphite-like degradation at 150 cycles

Graph 2 Relative Battery Capacity 150 cycles
Graph 2 Relative Battery Capacity 150 cycles


Graph 2) the blue line shows the relative capacity of 100% graphite batteries, the orange line the relative capacity of GEN1 batteries, the green line the relative capacity of GEN 2 batteries and the yellow line shows the relative capacity of GEN 3 batteries over 150 cycles [1]