# solid-state battery

Hongqi Unveils First Car with All‑Solid‑State Battery After Sulfide Electrolyte Breakthrough

FAW’s Hongqi has produced a sample car featuring a 66Ah all‑solid‑state battery that passed a 200°C thermal abuse test, with a sulfide electrolyte reaching ionic conductivity above 10 mS/cm. The milestone narrows the technical gap between solid and liquid electrolytes but industrial scaling, cost and long‑term stability remain major obstacles before mass commercialization.