Dongfeng’s 350 Wh/kg solid-state battery to exceed 1,000 km range, launching in 2026
Dongfeng Automobile is preparing to launch a new generation of solid-state batteries with an energy density of 350 Wh/kg, expected to enter production and vehicle deployment in September 2026. The company has already established a 0.2 GWh pilot production line that is operational. Once deployed, vehicles equipped with this battery are projected to achieve a range exceeding 1,000 kilometres.
The battery employs a multi-component system combining a high-capacity ternary cathode, a silicon-carbon anode, and an oxide polymer composite solid electrolyte. Dongfeng reports that at -30°C, the battery retains over 72% of its energy, compared with approximately 60% for conventional liquid-state ternary batteries. It also passed a thermal-chamber safety test at 170°C, surpassing the national standard of 130 °C.
At the 2025 World Power Battery Conference, Dongfeng showcased the Mach Super-kV Pure-Electric Platform, a 1200 V high-voltage architecture featuring a self-developed 1700 V silicon-carbide power module. The platform integrates a 12C fast-charging composite cell compatible with a 2 MW single-gun charger, delivering performance of “1 second for 2.5 km of range, 5 minutes for 450 km.” It supports autonomous charging and contactless payment.
The platform features a high-speed motor capable of 30,000 rpm. Combined with the high-energy battery pack design, the system enables vehicles to exceed 1,000 km in range. Safety features include a 1500 J impact-resistant battery, 48-hour thermal runaway monitoring, and motor-triggered fuse technology.
Dongfeng is developing a fast-charging version of the 350 Wh/kg solid-state battery, with vehicle deployment planned for December 2027. Research is also underway on a sulfide-based solid-state battery with an energy density of 500 Wh/kg. The 350 Wh/kg battery is expected to enter production and vehicle integration in September 2026.
