SirenOpt
Volta MemberVFAbout
SirenOpt makes PlasmaSens, an instrument that uses cold atmospheric plasma and machine learning to inspect battery electrodes, separators, wafers and coatings without damaging them.
It comes as a benchtop system for films and wafers, a robot-arm version for piece-by-piece inspection, and a roll-to-roll version for continuous monitoring of webs up to 1.5 m wide. In battery production, the roll-to-roll system targets cathodes, anodes, PE separators and AlOx coatings, measuring properties such as mass loading, coating thickness and contamination.
SirenOpt's co-founders include an associate professor at the University of Wisconsin–Madison.
From the Battery Report
Battery Report 2025 · chapterCell & Pack ManufacturingVolta Foundation's annual report on this part of the battery industry.Videos
SirenOpt in 2 Volta Foundation videos.
Supply Chain Segments
Location Info
- HQ
- Oakland, CA, United States
Sources
Chemistry: Lithium Iron Phosphate (LFP)
- sirenopt.com · Company site · checked Oct 2026“LFP Lithium iron phosphate offers strong safety, long cycle life, and thermal stability.”
Chemistry: Lithium-ion (Li-ion)
- sirenopt.com · Company site · checked Oct 2026“Cathodes host lithium ions during discharge ... capacity, and stability for lithium-ion applications”
Chemistry: Nickel Manganese Cobalt (NMC)
- sirenopt.com · Company site · checked Oct 2026“NMC Nickel manganese cobalt oxide is a leading cathode material.”
Quick Facts
- Founded
- 2022
- Team Size
- 11-50
- Funding
- Private
- Last Updated
- Oct 15, 2026
