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Solid-state batteries: Why Toyota's plans could be a game-changer for EVs

Word out of Japan today is that Toyota is working on launching a new solid-state battery for electric vehicles that will put it solidly in the EV game by 2022. Which leads to a simple question: What is a solid-state battery, and why does it matter? Back in February, John Goodenough observed, "Cost, safety, energy density, rates of charge and discharge and cycle life are critical for battery-driven cars to be more widely adopted." And risking a bad pun on his surname, he seemed to be implying that all of those characteristics weren't currently good enough in autos using lithium-ion batteries. This comment is relevant because Goodenough, professor at the Cockrell School of Engineering at the University of Texas at Austin - it so happens, he turns 95 today - is the co-inventor of the lithium-ion battery, the type of battery that is pretty much the mainstay of current electric vehicles. And he and a research fellow at U of T were announcing they'd developed a solid-state battery, one that has improved energy density (which means a car so equipped can drive further) and can be recharged more quickly and more often (a.k.a., "long cycle life") than a lithium-ion battery. (Did you ever notice that with time your iPhone keeps less of a charge than it did back when it was shiny and new? That's because it has a limited cycle life. Which is one thing when you're talking about a phone. And something else entirely when it involves a whole car.) What's more, there is reduced mass for a solid-state battery. And there isn't the same safety concern that exists with li-ion batteries vis-a- vis conflagration (which is why at airplane boarding gates they say they'll check your carryon as long as you remove all lithium-ion batteries). Lithium-ion batteries may be far more advanced than the lead-acid batteries that are under the hood of essentially every car that wasn't built in Fremont, Calif., but as is the case with those heavy black rectangles, li-ion batteries contain a liquid. In the lithium-ion battery, the liquid, the electrolyte, moves the lithium ions from the negative to the positive side (anode to cathode) of the battery. In a solid-state design, there is no liquid sloshing around, which also means that there's no liquid that would freeze at low operating temperatures. What Toyota is using for its solid-state battery is still unknown, as is the case for the solid-state batteries that Hyundai is reportedly working on for its EVs.

Next Toyota Supra might be called S-FR

In the world of car-rumors, those surrounding the revival of the Toyota Supra are rivaled only mid-engine Corvettes and billion-dollar barn finds for Internet potency. Let's face it, we love them as much as you do. Entering stage right then is your latest Supra tidbit. The always-vigilant forum masters at SupraMKV.com have been spending caffeine-fueled nights combing through the US Patent and Trademark Office websites, it seems. The recent result of their efforts is a trademark filing for "Toyota S-FR," in reference to "automobiles and structural parts thereof." While hardly a smoking gun, Supra theorists propose that the May 28 filing could signal the way forward for a new sports car. The "S" might be Toyota's homage to the Supra nameplate, with "FR" obviously indicating a front-engine, rear-drive layout. We'd be surprised if Toyota was so wiling to throw away the brand equity built in to the Supra name – the company did re-up its Supra mark. Then again, we would've called the FR-S "Celica," too. Go figure. Of course, the trademark could be for just about anything else. A sub-FR-S model is one proposition, though it could just as easily be a concept car, or nothing at all. Sleuths, tell us what you think in Comments, below. Related Video:

Toyota updates Euro-market GT86 suspension, appearance

While we were busy ogling the Scion FR-S Release Series 1.0 with its Yuzu yellow paint and a workover by Toyota Racing Development, and the Japanese Toyota 86 buyers were trying out their Playstation-compatible Sports Drive Logger telemetry system, the European 2015 Toyota GT86 got fitted with some new parts of its own. New on next year's model are stiffer mounts for the front suspension and rear shock absorbers, and new shocks in the back for better damping and less friction. Toyota says the result is sharper steering and less body roll.
Inside, the instrument panel and center console get decorated with a "carbon-fiber motif." There are new shades of pearl white and silver to dress up the outside, and the roof gets a shark-fin antenna for sharper looks and aero. It goes on sale this summer, and you can read everything we just told you in the press release below. We've reached out to Scion to see if we'll get the same upgrades on the FR-S this summer, too, company PR rep Nancy Hubbell telling us, "The European changes are among those being considered for the US model FR-S and we'll have final confirmation soon."