Honda promises solid-state EVs with 620 miles of range by 2030

06 December 2024

The race to develop longer-lasting electric vehicle batteries is on, and Honda hopes to take the lead with its ambitious solid-state battery technology. The Japanese automaker claims its future EVs will be capable of an impressive 620 miles of range on a single charge by the end of the decade. This is twice the range of most mass-market EVs available today.

Honda's solid-state batteries offer several advantages over traditional liquid-based lithium-ion batteries. They are 50% smaller, 35% lighter, and apparently 25% cheaper to produce. They are safer and can handle much faster charging speeds. The company's goals extend beyond 2040, with plans to achieve 776 miles of range. That's a bold target, and if ever achieved, it would mean for many people being able to charge their EV once a month.

To achieve these ambitious goals, Honda has built a pilot production facility to explore sustainable mass-production methods for solid-state batteries. Test production is set to start next month. However, the technology is far from being ready for primetime.

One major hurdle is the size of the prototype battery cells. Currently, they are 100 times too small to be used in any vehicle. "We have to make our prototype battery 100 times bigger," said Takeshi Ueda, chief engineer of innovative research excellence at Honda R&D. "We are working on how to bring them to the mass production phase."

Other challenges include preventing cracks in the ceramic separators and the formation of dendrites in the electrolyte, which can lead to short circuits. It turns out that maintaining the required low humidity levels in the production facility presents a significant energy challenge.

Honda remains confident in its ability to overcome all the obstacles. The company has implemented innovative techniques to streamline the production process and maintain optimal humidity levels. "Our all-solid-state battery will be a game changer in this EV era," said Keiji Otsu, president of Honda R&D Co.

With the promise of significantly longer ranges, faster charging times, and improved safety, solid-state batteries have the potential to revolutionize the EV industry. But those promises have been around for a very long time, with always the "next year" being the recurring theme. If Honda can successfully solve all the problems and mass-produce these batteries, it'll be a world-changing event. Until then, we'll keep our skeptic hats on.

Via