500 Cycles Major Milestone: Novacium’s Silicon-Based Anode Batteries Demonstrate High Capacity and High Durability

In This Article:

HPQ Silicon Inc.
HPQ Silicon Inc.
  • 18650 batteries with GEN3 silicon-based materials deliver unmatched capacity and durability [1], providing 3,301 milliampere-hours (mAh) of capacity with 85% retention after 500 cycles [2]

  • Results are 22% higher than the 100% graphite benchmark (2,708 mAh), and 10% above the advertised 3,000 mAh starting capacity of MuRata's high-performance US18650VTC6 battery [3]

  • The results are generating industry-wide interest from battery manufacturers, graphite companies, and industrial groups, with at least 15 new Non-Disclosure Agreements (NDAs) signed or in progress [4]

MONTREAL, Oct. 31, 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).

After 500 cycles of rigorous testing protocols [5] (0.5C cycling at 25°C), the Lithium-ion 18650 batteries made with a blend of graphite and Novacium’s GEN3 silicon-based anode material showed unmatched capacity and durability, achieving a 22% capacity improvement compared to graphite benchmarks with 85% capacity retention. Furthermore, analysis suggests that minor process modifications could reduce degradation to below 10% after 500 cycles.

“These outstanding results represent a major technical milestone, demonstrating our technology's potential to significantly enhance energy density and extend lithium-ion battery lifespan without costly retooling or overhauls of existing manufacturing processes,” said Dr. Jed Kraiem, COO of Novacium. “Our projection models continue to indicate that by the 1,000-cycle mark, GEN3 material performance should match the projected graphite benchmark at that stage [6].”

Pushing Battery Performance and Coulombic Efficiency with Silicon-Based Anodes at 500 cycles

Image 1 (Graph 1 A and 1B) at 500 cycles_ENG_V2_(WITHOUT LEGEND)
Image 1 (Graph 1 A and 1B) at 500 cycles_ENG_V2_(WITHOUT LEGEND)


Graph 1A highlights the superior capacity (in mAh) of 18650 batteries made with Novacium's GEN3 material (yellow line) compared to the 100% graphite benchmark (blue line) over 500 cycles. Batteries utilizing GEN2 (green line) and GEN1 (orange line) materials, on the other hand, fail to maintain performance beyond the 200-cycle mark. At 500 cycles, the data shows that GEN3 batteries sustain an average capacity of 3,301 mAh, significantly outperforming the graphite benchmark’s 2,708 mAh.

Graph 1B provides a closer look at the performance degradation (or Coulombic efficiency [7]) of the GEN3 silicon material over 500 cycles, showing a capacity retention of 85% compared to the graphite benchmark's 97%—a 12% difference. Specifically, after 500 cycles, the absolute capacity of GEN3 batteries (yellow line) decreased from 3,883 mAh to 3,301 mAh, while the graphite benchmark (blue line) exhibited a slight reduction from 2,780 mAh to 2,708 mAh.