Solid-State BEV Batteries 10 Years Away, Automakers Warned

Manufacturers of BEVs are in danger of placing too much faith in early adoption of solid-state battery technology while missing out on near term alternatives.

That’s the view of Israeli extreme fast charging battery technology specialist StoreDot which claims that mass-produced solid state batteries are still at least a decade from commercial applications. Instead, it says, global automotive manufacturers should be considering interim technologies in the medium term, such as semi-solid batteries.

While solid-state-batteries promise cost-effective fast and safe charging batteries, with high energy densities, they remain a work in progress and still face significant challenges before they can be manufactured at scale, says the company. A solid-state battery uses solid electrolytes instead of the liquid or polymer gel electrolytes found in current technologies such as lithium-ion or lithium polymer batteries.

Dr Doron Myersdorf, StoreDot CEO, explained: “It’s crucial that leading battery developers like StoreDot give global automotive manufacturers a realistic and hype-free roadmap for the introduction of extreme fast-charging battery technologies. Right now, despite some of the bullish claims by our rivals, all-solid-state batteries are still at least 10 years away. They are certainly no silver bullet for any vehicle maker currently developing fast charging electric vehicle architectures.

“We believe a more practical step is the introduction of semi-solid-state batteries which we are targeting for mass production by 2028. These will be advanced, safe, high performing cells that can achieve 100 miles of charge in just three minutes (100in3). They have the additional benefit of requiring a simpler and less challenging manufacturing process than all-solid-state technologies.”

In March this year the company revealed its ‘100inX’ strategic technology roadmap. This featured 100in5, 100in3 and 100in2 of miles per minute of charging. These are three generations of technologies using silicon-dominant XFC, semi-solid state and all-solid-state. Timings for these will be delivered over the coming decade with 100in5 by 2024, 100in3 by 2028 and 100in2 by 2032.

Last month StoreDot proved the superior performance of its extreme fast charging battery cell technology by delivering cells that exceeded 1,000 cycles in production ready EV form factor. These cells are now being shipped in pouch format to automaker partners for real-world testing and exhibit the promised ‘100in5’ EV performance.

— Paul Myles is a seasoned automotive journalist based in Europe. Follow him on Twitter @Paulmyles_

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