Toyota’s solid-state EV battery dreams might actually come true

Toyota is still on track to launch its first solid-state battery-powered vehicle within the next two to three years. An executive confirmed Toyota’s timeline at the Tokyo Motor Show this week.

Toyota’s first solid-state battery-powered EV is on track

Earlier this month, Toyota said it aims to “achieve the world’s first practical use of all-solid-state batteries in BEVs” after securing a new partnership with Sumitomo Metal Mining Co. to mass-produce the new battery tech.

Toyota has been hyping up solid-state batteries for nearly a decade. It was initially planning to launch them in 2020, but the launch was pushed back to 2023, then to 2026. The new tech is still a few years away, but Toyota insists it will become a reality.

At the Tokyo Motor Show, Keiji Kaita, president of Toyota’s Carbon Neutral Advanced Engineering Development Center, confirmed it’s “sticking on the schedule” to introduce its first solid-state battery-powered EV by 2028.

Kaita added that solid-state batteries are “very important in the future,” promising to nearly triple driving range while cutting charging time in half.

“For the all-solid-state battery, the characteristic is high power, compact, and long range,” Toyota’s executive explained at the event (via Autocar).

However, as to which vehicle it will debut in first, remains a mystery. “Whether it will be a Lexus or Toyota, we will leave that to your imagination,” Kaita said.

While solid-state batteries offer the potential for drastic improvements in driving range, charging time, and output, Toyota said they will also reduce emissions with less environmental impact.

“We will try to reduce the carbon footprint, and the key here is reducing the CO2 output in the process of manufacturing the material. But the most important thing is producing a battery whose life is longer,” Kaita explained at the event.

According to Hiroki Nakajima, Toyota’s chief technical officer, solid-state batteries could, “technically speaking,” be used in its current EV platform. However, the tech is better suited for a dedicated platform.

Toyota recently revealed a solid-state battery pack prototype, claiming it can deliver 745 miles of range (1,200 km) and charge in under 10 minutes.

To make it a reality, Toyota is partnering with several major Japanese firms, including Idemitsu Kosan, to mass-produce solid-state EV batteries.

Idemitsu announced plans earlier this year to build a large-scale production plant for lithium sulfide, a key raw material used in all-solid-state EV batteries. Once complete, the facility will be capable of producing 1,000 metric tons of lithium sulfide annually. Idemitsu aims to begin mass-producing all-solid-state batteries in 2027.

The partnership is part of Japan’s broader strategy to wean itself off of China and South Korea to establish a domestic supply of EV batteries.

Toyota is one of a few companies investing a combined 1 trillion yen ($7 billion) to build electric vehicle batteries in Japan.

To maximize range and efficiency, Toyota plans to reduce the height of the battery housed under the vehicle to 120 mm. In high-performance EVs, it could be reduced to as low as 100 mm. Toyota previewed the design in the Corolla Concept, which debuted at the Tokyo Motor Show on Wednesday.

Electrek’s Take

Toyota has been making bold claims about solid-state EV batteries for nearly a decade now. Will it finally bring the new battery tech to market?

Toyota insists it’s still on track to launch them in 2027 or 2028, but how many times have we heard this before? Until we see prototypes out for testing and real-life results, I’ll believe it when I see it.

Meanwhile, others are already testing solid-state batteries on the road. Mercedes announced that it put “the first car powered by a lithium-metal solid-state battery on the road” in February. And then, just last month, Mercedes drove an EQS equipped with solid-state batteries for nearly 750 miles (1,205 km).

Mercedes also considers solid-state batteries to be a “game-changer” for electric vehicles. It plans to put the battery tech into series production by the end of the decade.

Nissan also recently took a big step toward commercializing all-solid-state EV batteries after prototype cells reached performance targets set for mass production

CATL and BYD, which account for over half of global EV battery sales, plan to introduce solid-state batteries around 2027, with mass production closer to 2030.

In August, SAIC MG claimed the new MG4 was “the world’s first mass-produced semi-solid-state” electric vehicle to hit the market.

If Toyota wants to be among the first, it had better get moving.