US-based solid-state battery manufacturer ION Storage Systems has demonstrated a 25x increase in capacity while surpassing 1,000 charge cycles for its solid-state battery (SSB) cell.

This validates the performance and durability solid-state battery cells need for a range of applications, as ION’s cells cycle without compression or volume change—which is a barrier to commercial SSB adoption.

ION demonstrated cell footprints up to 40 mm x 40 mm and has the capability of going larger. Reaching 1,000+ cycles in this larger format validates the technology for commercial applications, the company said. Cycling was performed at a rate of C/3 at room temperature and without compression and cells maintained greater than 80% capacity retention. This builds on ION smaller cell work, which has reached over 2,000 cycles.

In 2024, ION commissioned a 30,000-square-foot manufacturing facility positioned for rapid scaling to multi-layer cell production. It also received a $20-million award from ARPA-E to support the continued development of its SSBs.

ION’s battery cells are engineered to provide safer, longer-lasting and more efficient energy systems tailored to the requirements of defense, consumer electronics, EVs and grid storage applications.

“Battery-powered applications demand power sources that are not only high-performing but also safe, compact and long-lasting. Our breakthrough—achieving both a 25x capacity increase and delivering over 1,000 cycles—demonstrates that our technology is ready to meet these challenges,” said Greg Hitz, co-founder and CTO of ION Storage Systems. “With our new production facility ramping up multi-layer development, we are accelerating the path to commercialization and unlocking the full potential of solid-state batteries across multiple sectors.”

Source: ION Storage Systems