Toyota is gearing up to transform the electric vehicle industry with next-generation solid-state batteries (SSBs) that promise an unprecedented 40-year lifespan and extended driving ranges beyond 621 miles (1,000 km). The automaker plans to bring these advanced batteries to market by 2027–2028, marking a pivotal shift in sustainable EV technology.
Quadruple the Lifespan, Smaller Footprint
Recent reports suggest Toyota’s SSBs could maintain up to 90% capacity after 40 years, compared to roughly 10 years for today’s lithium-ion batteries. This extraordinary durability means one solid-state unit could replace four conventional batteries over its lifetime—dramatically cutting production emissions and waste.
The new design swaps flammable liquid electrolytes for solid materials, enhancing safety, energy density, and charging speed. The result: smaller, lighter battery packs that deliver longer range and faster charging with reduced overheating risks.
From Premium to Mainstream
Toyota executives say early versions will appear first in premium models such as the Lexus or Century before scaling down to high-volume vehicles like the next-generation Corolla. While initial costs are expected to be high, Toyota anticipates prices will fall as production scales and supply chains mature.
With their extended lifespan, solid-state batteries could outlast the vehicles they power, enabling battery-swapping or reuse across multiple cars—potentially two or three times—making the upfront investment more sustainable over time.
Strategic Partnerships Driving Innovation
Toyota’s progress stems from a deep partnership with Sumitomo Metal Mining, focused on developing robust cathode materials that withstand repeated charge cycles. Leveraging Sumitomo’s advanced powder synthesis technology, the pair has created a high-durability cathode ready for mass production as early as Japan’s 2028 fiscal year.
This collaboration aligns with Japan’s broader push to secure a domestic EV battery supply chain, reducing reliance on imports from China and South Korea. Backed by government support, Japanese automakers and suppliers are investing over $7 billion (1 trillion yen) in local battery manufacturing capacity.
In parallel, Toyota is working with Idemitsu Kosan, a major oil refiner, to produce lithium sulfide, a key material for SSBs. Idemitsu is building a large-scale facility capable of generating 1,000 metric tons annually, targeting mass production by 2027.
Challenges Ahead, Momentum Building
Despite significant progress, experts note that mass adoption of solid-state batteries will take time, citing supply constraints, complex manufacturing, and high costs. Still, Toyota’s advances indicate real momentum toward commercial viability, positioning the company at the forefront of next-generation EV power solutions.
As the global race for battery innovation intensifies, Toyota’s 40-year solid-state technology could redefine what durability, efficiency, and sustainability mean in the electric era.
