Novacium’s Silicon Anode Batteries Outperform 18650 Cells at 900 Cycles

HPQ Silicon Inc. and Novacium report major advancements in silicon-anode batteries. Novacium’s GEN3 cells outperform commercial 18650s, retaining over 80% capacity after 900 cycles and delivering a 31% energy gain. Plans include a pilot plant for mass production.

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HPQ Silicon Inc., a company specializing in green engineering of silica- and silicon-based materials, has announced significant advancements in battery technology through its partner, NOVACIUM SAS (Novacium).

Recent tests of Novacium’s GEN3 silicon-anode batteries at 900 cycles demonstrated superior performance compared to leading commercial 18650 cells. The GEN3 batteries maintained a capacity exceeding 3,100 milliampere-hours (mAh), retaining over 80% of their initial capacity after 900 cycles. In comparison, benchmark graphite-based batteries delivered approximately 2,400 ampere-hours (Ah) of cumulative energy, while the GEN3 batteries achieved around 3,200 Ah, representing a 31% cumulative energy gain.

Additionally, the GEN3 batteries exhibited an average Coulombic Efficiency of 99.88%, significantly higher than industry standards. Graphical analysis revealed that GEN3 batteries maintained an average capacity of 3,200 mAh at 900 cycles, which is 21% higher than the graphite benchmark’s 2,604 mAh. This enhanced stability indicates a more favorable degradation profile.

When compared to leading 18650 cells, the GEN3 batteries outperformed models such as Panasonic NCR18650GA, which retains 70% capacity after approximately 300 cycles; LG MJ1, retaining between 70% and 80% capacity between 300 and 400 cycles; and Samsung 30Q, retaining around 60% capacity after 250 cycles.

Dr. Jed Kraiem, COO of Novacium, stated that these results validate the company’s ability to develop advanced silicon-based materials. By blending silicon with high-grade artificial graphite, Novacium’s materials integrate seamlessly into various commercial battery formats, including 18650, 21700, 26650, and 4680 cells, providing enhanced capacity and durability.

HPQ Silicon Inc. and Novacium aim to capitalize on the growing market for silicon-based anode materials, which currently account for approximately 5% of Li-ion battery anodes dominated by graphite. With the graphite market projected to expand from approximately 700,000 tonnes in 2021 to 4.5 million tonnes by 2030, silicon-based materials are positioned to capture an estimated 10-15% of this expanding market.

Looking ahead, the companies plan to establish a pilot plant for the mass production of silicon-based materials, further advancing their technology and market presence in energy storage and electric vehicles.

Source: Novacium

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