- These solid-state batteries feature an energy density of 350 Wh/kg, and Dongfeng has already put a 0.2 GWh pilot line into operation.
- Dongfeng is also developing 350 Wh/kg all-solid-state batteries supporting fast charging, with pilot production expected by December 2027.
Dongfeng Motor (HKG: 0489) expects to begin mass production of solid-state batteries with an energy density of 350 Wh/kg in September 2026, enabling electric vehicles (EVs) to achieve a range of 1,000 kilometers.
The company has already established and put into operation a 0.2 GWh pilot production line for solid-state batteries, according to a statement released today.
At the 2025 World Power Battery Conference held in Yibin, Sichuan starting yesterday, Dongfeng showcased its next-generation high-energy-density solid-state batteries, a pure-electric platform exceeding 1000 volts, and multiple new energy vehicle (NEV) models.
The company is developing solid-state battery products with energy densities of 350 Wh/kg, 400 Wh/kg, and 500 Wh/kg, with the 350 Wh/kg variant already achieving pilot production and capable of delivering 1,000 km of range, it said.
Dongfeng's statement refers to the 350 Wh/kg batteries as solid-state batteries, though one accompanying image indicates they are semi-solid-state batteries.
Late last month, local media outlet Yicai reported that a new regulatory document is being drafted to uniformly designate "semi-solid-state batteries" as "solid-liquid batteries" to prevent public confusion with fully solid-state batteries.
Dongfeng is also developing 350 Wh/kg all-solid-state batteries supporting fast charging, with pilot production expected by December 2027, it said.
Concurrently, Dongfeng is conducting preliminary research on sulfide-based all-solid-state batteries with an energy density of 500 Wh/kg, it said.
At the 2025 World Power Battery Conference -- running through November 15 -- Dongfeng showcased the 350 Wh/kg solid-state batteries, addressing the safety and low-temperature performance shortcomings of traditional lithium batteries, it claimed.
The batteries maintain over 72 percent energy retention at -30°C, significantly outperforming the 60 percent level of conventional liquid ternary batteries, the company said.
Regarding safety, the 350 Wh/kg solid-state battery passed a 170°C thermal box safety test, far exceeding the national standard requirement of 130°C, it noted.
Dongfeng also showcased a 1200-volt ultra-high-voltage pure-electric platform at the event, utilizing its in-house developed 1700-volt silicon carbide (SiC) power modules.
The platform can achieve 2.5 kilometers of range in one second of charge and 450 kilometers in five minutes when paired with 12C battery cells and a 2-MW charger, the company said.
