FAW Begins Testing Semi-Solid-State Battery With 500 Wh/kg Energy Density - CleanTechnica

FAW, through its subsidiary China Automotive New Energy Battery (CANEB) and in collaboration with Nankai University, has developed and begun testing a semi-solid-state battery boasting an energy density of 500 Wh/kg. This battery uses a novel approach by replacing expensive nickel with abundant and cheaper manganese, resulting in a lower-cost battery pack with energy density comparable to solid-state batteries. The battery features in situ cured composite electrolyte technology, offering high ionic conductivity, flame retardancy, and improved safety. The lithium-manganese cathode achieves an energy density of 300 mAh/g, more than double that of the best lithium iron phosphate (LFP) cells, enabling prototype vehicles to potentially exceed 1,000 km (over 600 miles) on a single charge, with future versions targeting up to 700 miles. The semi-solid-state battery is categorized under China’s new solid-state battery classification system, which defines batteries by the percentage of solid electrolyte content; those with 95% solid electrolyte