Vinylene carbonate

Vinylene carbonate (CAS 872-36-6), commonly abbreviated as VC, is a cyclic carbonate ester used primarily as an electrolyte additive and film-forming agent in lithium-ion battery manufacturing.

Where is Vinylene carbonate used?

• Lithium-ion and lithium-polymer batteries: added to carbonate-based electrolyte formulations at 1–5% loading to suppress electrolyte decomposition at the anode surface
• EV packs, consumer electronics and grid storage: specified to reduce irreversible capacity loss during formation cycling
• Specialty polymer synthesis: building block for polycarbonate coatings and functional films requiring controlled crosslink density
• Personal care: explored as a carrier solvent and plasticizing component in film-forming systems
• At low concentrations it polymerizes on electrode surfaces to form a stable solid electrolyte interphase (SEI).

Commercial specifications

• Battery-grade specifications typically require purity ≥99.5% and tightly controlled water content
• Standard technical and high-purity electronic grades
• Packaging from small R&D quantities to drum volumes for industrial electrolyte blending