Sionic Energy announces drop-in silicon anode platform boosting EV battery energy density by 50%

Sionic Energy has announced commercial availability of its Rapid Integration Silicon Platform, a drop-in, 100% silicon-anode solution designed for lithium-ion battery manufacturers and EV OEMs. The company says the technology replaces graphite entirely and delivers energy density of 370 Wh/kg, supports ultra-fast charging under 10 minutes and provides over 1,000 charge cycles with operating temperatures from -30 °C to 45 °C.

Designed for compatibility with standard lithium-ion manufacturing lines, this silicon platform requires no pre-lithiation or cell compression. It utilizes a proprietary conductive matrix that maintains both mechanical stability and electrical performance without requiring additional structural components or process modifications. Independent laboratories and global automotive companies have already verified the platform’s performance, according to Sionic’s announcement.

Currently, pouch-format prototypes have been shipped to Tier 1 and Tier 2 battery producers and leading automotive companies for evaluation. The company confirmed cylindrical cell platform pilot production will begin in Q4 2025, followed by prismatic-format platform pilots in Q1 2026. The platform is packaged as a licensed product, which includes a flexible intellectual property package, material specification sheets and on-site technology transfer assistance, which Sionic says significantly reduces scale-up risks for cell manufacturers.

“This platform removes the barriers that have held full silicon back for years—complexity, cost and inflexibility,” said Ed Williams, CEO of Sionic Energy. “Through innovations in proprietary materials and designs, we’ve engineered the complexity out. Our Rapid Integration Silicon Platform slots into today’s equipment, removes graphite entirely and enables cell makers and product companies to license a high performance, ready-to-build reference platform, eliminating extensive R&D efforts and delivering the speed and agility needed to compete in today’s battery markets.”

Additionally, Sionic emphasized that all base silicon and other core materials for the platform are sourced from qualified suppliers within the US, ensuring domestic supply chain compliance.

Source: Sionic Energy