Toyota is gearing up for a significant leap in electric vehicle technology with plans to integrate solid-state batteries (SSB) in its cars by 2027-2028. This innovation could revolutionize the EV market by offering batteries with a lifespan extending up to 40 years, which is quadruple the longevity of conventional EV batteries.
Solid-state battery technology is poised to transform electric vehicles by promising an impressive range of over 621 miles (1,000 kilometers) per charge. These batteries are anticipated to be more compact, lighter, and cheaper to manufacture compared to current lithium-ion batteries.
In a recent development, Toyota announced a partnership with Sumitomo Metal Mining to mass-produce cathode materials, marking a significant stride in all-solid-state battery technology.
Sustainable EV Power
The shift to solid-state batteries involves replacing flammable liquid electrolytes with solid ones, enhancing safety, energy density, and lifecycle. These batteries promise longer ranges and faster charging times while mitigating overheating risks, making them a promising candidate for broad EV adoption once production challenges are overcome.
According to Toyota, the new SSBs could outlast the cars they power, allowing for battery swaps and justifying the higher initial costs over time. At the Japan Mobility Show in Tokyo, company representatives noted that the technology will initially be costly, with price reductions expected as production ramps up.
Initially, solid-state batteries are likely to debut in high-end models such as Lexus or Century, before being integrated into mass-market vehicles like the forthcoming Toyota Corolla, as reported by Car Expert.
EV Tech Advance
Since 2021, Toyota and Sumitomo have been developing cathode materials for solid-state batteries, focusing on challenges like cathode degradation during charge cycles. Utilizing Sumitomo’s proprietary powder synthesis technology, the collaboration has resulted in a highly durable cathode material, with mass production anticipated to commence in Japan’s 2028 fiscal year.
This initiative is part of Japan’s broader strategy to establish a robust domestic EV battery supply chain, reducing reliance on China and South Korea. Several Japanese firms, including Toyota, are investing heavily in local battery production, with government support bolstering these efforts.
Toyota is also collaborating with Idemitsu Kosan, an oil refiner, to develop lithium sulfide, a crucial raw material for these batteries. Idemitsu is constructing a large-scale facility for lithium sulfide production, aiming for mass production by 2027.
Although substantial progress is being made, experts caution that widespread adoption of solid-state batteries may face hurdles due to raw material sourcing, complex manufacturing, and high production costs. Nonetheless, Toyota’s advancements underscore significant momentum towards commercializing solid-state batteries, representing a substantial step in the quest for longer-lasting, efficient, and domestically produced EV battery solutions.
Original Story at interestingengineering.com