China has established the first industrial-scale production line for large-capacity all-solid-state batteries, marking a significant step toward next-generation electric vehicle (EV) technology. The facility, operated by GAC Group, is currently producing 60 Ah+ vehicle-grade cells for testing, with plans for mass production between 2027 and 2030.
What This Means for EVs
The new batteries promise a substantial leap in energy density and range. Current EVs with a 500 km (310 miles) range could potentially exceed 1,000 km (620 miles) on a single charge using these solid-state cells. This is because the technology allows for more energy storage within the same physical space, addressing a key limitation of existing lithium-ion batteries.
How Solid-State Batteries Differ
Traditional lithium-ion batteries use liquid electrolytes, which are flammable and degrade over time. All-solid-state batteries replace these liquids with solid electrolytes, improving thermal stability, safety, and lifespan. GAC’s production line achieves an areal capacity of up to 7.7 mAh/cm², outperforming traditional “wet” lithium-ion manufacturing (less than 5 mAh/cm²).
Production Innovations
GAC is employing a streamlined “dry” anode production process, combining slurry mixing, coating, and rolling into a single step. This technique reduces energy consumption and increases manufacturing efficiency. Additionally, the solid electrolytes can withstand much higher temperatures (300–400 °C) compared to liquid electrolytes (around 200 °C), enhancing safety and performance.
Timeline and Challenges
Vehicle integration tests are scheduled for 2026, with a gradual scale-up to full mass production between 2027 and 2030. While the milestone is technically impressive, widespread commercialisation depends on several factors: securing a reliable supply of solid electrolyte materials, ongoing investment, and validation of long-term durability and safety in real-world driving conditions.
Currently, global commercialisation of all-solid-state batteries is limited. GAC’s production line positions the company as one of the first in China with industrial-scale capacity for large-format solid-state cells. The speed of scale-up and cost competitiveness will dictate the technology’s overall impact on the EV market.
The development is significant as it pushes beyond the current limits of lithium-ion technology. The race to improve EV batteries is accelerating, with many companies worldwide investing in solid-state research. China’s move to establish large-scale production could give it a competitive edge in the future EV landscape.
