TaiwanTaiwan’s ProLogium has unveiled GEN4, a battery chemistry built around an electrolyte it calls SFIE, short for Superfluidized Inorganic Electrolyte, together with a design it names the Dynamic Coordination Network (DCN). The announcement, dated 8 October, comes ahead of the Paris Motor Show, where the company is showing prototypes. All performance figures below are ProLogium’s own, from internal testing.
The claimed results
ProLogium reports a charge from 5% to 80% in 6.4 minutes and more than 1,000 fast-charge cycles. The batteries retain more than 90% of their capacity at -20°C and reach discharge rates of 15C, meaning a full discharge in four minutes. SGS witnessed the electrolyte’s ionic conductivity of up to 57 mS/cm at room temperature, a property of the material rather than of a finished battery. The release does not say whether the charging and cycle figures come from single cells or packs, so they cannot be turned into a vehicle charging time or range.
A third kind of electrolyte
ProLogium describes SFIE as a third lithium-ion transport mechanism, sitting between liquid and solid electrolytes. That framing is the company’s own and has not been independently assessed. It follows the 381 Wh/kg cell we covered when ProLogium began mass production.
Partners
Mercedes-Benz has a joint testing agreement with ProLogium and priority access to GEN4 cells, a testing and access arrangement rather than a supply contract. FEV is working on cell and module integration, and OPmobility has built a battery pack prototype. No vehicle, price or start of production is attached to GEN4.
