HPQ Silicium's GEN4 Battery Anode Material Achieves Over 6,600 mAh Capacity

HPQ Silicium Inc. has reported significant advancements in its battery material technology. The company's 21700 cylindrical cells, produced using Novacium's GEN4 silicon-based anode material, have achieved an average discharge capacity exceeding 6,600 mAh, with a record cell reaching 6,696 mAh.

This performance corresponds to an energy density of 319.9 Wh/kg and 906.2 Wh/L, positioning the GEN4 cells at the upper range of reported global performance metrics. For comparison, commercially available 21700 graphite cells typically offer between 4,800 and 5,000 mAh, making capacities above 6,500 mAh a rare achievement.

The development marks a consistent generational improvement. GEN4 represents a 45% increase over the graphite baseline and a 9% advancement compared to the previous GEN3 version. HPQ anticipates further performance enhancements in future iterations, targeting the 7,000 mAh range.

HPQ holds exclusive North American rights to commercialize Novacium's GEN3 and GEN4 silicon-based battery materials under the HPQ ENDURA+ brand. CEO Bernard Tourillon stated that the results validate an industrially viable, high-performance solution on the company's commercialization pathway.