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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.

Toyota preparing Scion-badged Nissan Juke fighter

As we've said on multiple occasions, the sub-compact crossover market is The Next Big Thing™. With that in mind, Toyota's lack of a competitor to the new breed of super-small, super-cute crossovers like the Nissan Juke, Honda HR-V, Mazda CX-3, and Jeep Renegade has been especially glaring. But as these photos show, the hole in the Japanese giant's lineup could soon be filled. Our spies captured this heavily disguised prototype testing in the deserts of the American southwest, signaling that Toyota is preparing to wade into the Nissan Juke's space by offering a tiny, but very heavily styled crossover of its own. Our spy photographers call the cute ute's look "aggressive," citing inspiration from the Toyota C-HR concept from the 2014 Paris Motor Show. Based on the meaty wheels and tires and what we can see through the camo, we're inclined to agree with their assessment. Underneath that sheet metal, we're told the new car rides on Toyota's new NGA platform. Like the Juke, a four-cylinder engine and continuously variable transmission will be on offer, although there's no telling whether Toyota will follow its rival's enthusiast beat and offer a six-speed manual version. What we find most interesting about all of this conjecture, though, is what it means for Scion, rather than its parent. Introducing a small crossover is the next logical step for Toyota's troubled sub-brand, and would serve as a delectable followup to the recently released iA sedan and iM hatch. Such a three-model lineup, when combined with the enthusiast-oriented FR-S, would transform Scion into a force to be reckoned with in the entry level space. Supporting this conjecture isn't too hard, either. As the spy photos show, this camo'd tester is being supported by a xB, the closest thing Scion (or its parent company, for that matter) have to a sub-compact CUV. It's unclear just when this new model will make its debut, but if Toyota hopes to make inroads into this popular new segment, this CUV will need to arrive before its extremely competent rivals can establish a solid foothold. Related Video:

A few pre-race notes and a lot of photos from the 24 Hours of Le Mans

The 82nd running of the 24 Hours of Le Mans is on.
Audi has won 12 of the last 15 events, the scion of Auto Union is trying to make it 13 this year. To do so, it will have to overcome a situation faced only three other times during its dominance of La Sarthe: underdog status. Toyota has won the first two races of the year and claimed pole for this race, the rumor being that this year it's Toyota's race to lose.
And then there's Porsche. It's been 16 years since the Stuttgart brand raced on the top rung at Le Mans, three years years since it announced its return, just a year since it acquired Mark Webber in a signing that wasn't subtle and a few months since we got eyes on the 919 Hybrid.