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Apple’s battery supplier TDK claims breakthrough in solid-state batteries, will bring major perf boost

Japan-based TDK, a major supplier to Apple for its batteries, has announced a significant breakthrough in developing small solid-state batteries. This could result in a significant performance boost on several devices, from wireless headphones to smartwatches.

The company claims its new material achieves an energy density of 1,000 watt-hours per liter, substantially improving compared to its current mass-produced batteries.

This development surpasses competitors’ offerings in solid-state batteries, which typically reach around 50 Wh/l, and even exceeds rechargeable coin batteries using traditional liquid electrolytes, which achieve about 400 Wh/l.

Noboru Saito, TDK’s chief executive, expressed a bright outlook on the potential impact of their newly developed solid-state battery material on society’s energy landscape. He emphasized its potential to enable smaller device sizes and longer operational durations, painting a promising picture of the future of technology.

The batteries will feature an all-ceramic design with oxide-based solid electrolytes and lithium alloy anodes, promising enhanced electrical charge storage capabilities and heightened stability for improved safety.

While TDK’s breakthrough holds promise for revolutionizing energy storage, especially in consumer electronics and potentially electric vehicles, it still faces some significant challenges. These hurdles underscore the complexity and importance of the technology’s development, making it a compelling topic for technology enthusiasts, industry professionals, and investors.

Solid-state batteries are highly demanded for their potential safety, lighter weight, potential cost-effectiveness, longer lifespan, and faster charging than conventional liquid electrolyte batteries. However, scaling up to larger battery sizes, crucial for applications in electric vehicles and smartphones, poses significant technical and production challenges.

Industry analysts, such as Kevin Shang from Wood Mackenzie, highlight concerns over the mechanical properties and the complexities of mass production, particularly in integrating solid-state oxide-based batteries into smartphones.

Despite these hurdles, experts foresee solid-state batteries, particularly those that use sulfide-based electrolytes, playing a pivotal role in enhancing the driving range of electric vehicles.

TDK, renowned for its expertise in battery materials since its founding in 1935, plans to start shipping prototypes of its new solid-state battery next year and then scale up to mass production.

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