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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.

Hyundai ix25 Concept foreshadows B-segment CUV

Hyundai introduced an all-new crossover concept to the crowds at the 2014 Beijing Motor Show, showing the ix25, a near-production concept that heralds the arrival of a new compact CUV for the People's Republic.
Boasting Hyundai's "Fluidic Sculpture 2.0," the ix25 is a handsome little soft-roader that we could see slotting in nicely below the vehicle we call Tucson (the rest of the globe knows it as the ix35), and would serve as the entry point for Hyundai's Chinese CUV range. Under hood sits a familiar 2.0-liter, "Nu" four-cylinder, which we've sampled in assorted Hyundais and Kias over the years.
At 168 inches long it's ten inches shorter than a Ford Escape and five inches longer than the Soul, from sister company Kia. Despite these differences, the ix25 Concept's wheelbase is less than an inch longer (eight-tenths to be exact) than the Soul's 101.2-inches. More notably, the ix25 is roughly the size of the new Chevrolet Trax.

Hyundai i20 WRC gets shakedown in Finland

It's always a good day when we get to post a video about rally racing. It's even better when that video is of a new WRC competitor undergoing testing. This spy video shows Hyundai's i20 WRC, a car that debuted nearly one year ago at the 2012 Paris Motor Show. It's set to usher in Hyundai's return to top-flight motorsports, and will do battle with the cars from Citroen, Ford and Volkswagen that are currently contesting the 2013 season.
This video, which shows the i20 testing on the notoriously tough Finnish rally stages, gives the impression that progress on the new WRC contender is going well. It certainly looks fast, and as with the vast majority of rally cars, it sounds absolutely wonderful (listen to some of those gun-shot-like backfires). Take a look below for the whole, glorious three minutes and 20 seconds of unadulterated rally noise, flying dirt and jumping.