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Sumitomo Metal Mining and Toyota Motor Corporation have announced a joint development agreement focused on the mass production of cathode materials for all-solid-state batteries. These advanced batteries are intended for future battery electric vehicles (BEVs), with the collaboration aiming to accelerate their development and commercialization.
Key Highlights
- Sumitomo Metal Mining and Toyota are partnering to mass-produce cathode materials.
- The materials are designed for next-generation all-solid-state batteries.
- A “highly durable cathode material” has been developed to overcome degradation issues.
- Toyota is targeting a 2027-28 market launch for BEVs equipped with these batteries.
Advancing Next-Generation Battery Technology
All-solid-state batteries represent a significant step forward from current liquid-based battery technologies. Composed primarily of a cathode, anode, and solid electrolyte, they offer the potential for a smaller size, higher output, and longer life. For BEV applications, this technology is expected to provide enhanced performance, including longer driving ranges, shorter charging times, and higher power output.
Overcoming Technical Challenges
The two companies have been conducting joint research on cathode materials since approximately 2021. A key focus has been to address the challenge of material degradation that occurs during repeated charging and discharging cycles. Leveraging Sumitomo Metal Mining’s proprietary powder synthesis technology, the partnership has successfully developed a “highly durable cathode material” specifically suited for all-solid-state batteries. With over two decades of experience, Sumitomo Metal Mining intends to supply and scale up production of this new material.
Future Outlook and Mass Production
Both companies will continue their collaboration to improve the performance, quality, and safety of cathode materials for all-solid-state batteries. A major goal is to reduce costs for mass production. The ultimate aim is to achieve the world’s first practical application of all-solid-state batteries in BEVs, which could transform the automotive industry and contribute to a carbon-neutral society.
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