Beyond Liquid Electrolytes
Conventional lithium-ion cells use a liquid electrolyte — a lithium salt dissolved in organic solvents — as the ionic conductor between cathode and anode. While effective, liquid electrolytes present limitations: they are flammable, can decompose at high voltages, and contribute to the thermal runaway risk in high-energy cells. Solid-state and semi-solid electrolytes replace or supplement the liquid phase with ceramic, polymer, or composite solid materials that eliminate these limitations.
C4V Partnership
The American Battery's cell technology ecosystem includes Charge CCCV (C4V) — headquartered at Vestal New York — as the solid-state and semi-solid electrolyte development partner. C4V is developing next-generation electrolyte systems designed to be compatible with C4V's BMLMP and LFP cathode chemistries, targeting performance improvements in energy density, operating temperature range, and calendar life while maintaining the domestic supply chain integrity that defines The American Battery's mission.
Semi-solid pathway: Semi-solid electrolytes (using gel or flowable ceramic composite) offer a near-term pathway to improved safety and wider temperature range while maintaining manufacturing compatibility with existing cell assembly lines — a pragmatic bridge to full solid-state technology.
Performance Targets
- Energy density: 400–500 Wh/kg (solid-state targets) vs. 200–280 Wh/kg for current liquid NMC
- Safety: Elimination of flammable liquid electrolyte — fundamentally improved thermal safety profile
- Temperature range: -40°C to +85°C — suited for defense, aerospace, and extreme environment applications
- Cycle life: Targeting 5,000+ cycles without the solid electrolyte interphase (SEI) growth limitations of liquid cells