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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 says, maybe driverless cars won't be so bad

The allure of autonomous driving for many people is the tech's ability to free up their time behind the wheel from paying attention to the road. However, the driverless future might also increase the mobility of folks all over the world. Toyota's recent billion-dollar research investment aims to tackle both of these questions, and Hyundai now has a moving commercial that offers a glimpse at some of these possibilities. Hyundai also used a clever approach to show off its driver assistance systems in an ad last year, but this time it took a more emotional style to demonstrate the future. We don't want to spoil the optimistic spot's hook, but the video stars a little boy who just wants to drive. The way that he does it is heartwarming and beautifully shot. The commercial is in Korean, but like any good piece of marketing, the visuals break down the language barrier.

2016 Hyundai Sonata Hybrid, PHEV gets conservative new look, more range

The plug-in hybrid middle ground between the 2015 Toyota Prius Plug-In (11 miles of EV range) and the 2016 Chevrolet Volt (50 miles) has long been the Ford domain. The Blue Oval has two plug-in hybrids with 20 miles of all-electric range, its 2015 Fusion and C-Max Energi Plug-in Hybrids. Entering this fray later this year will be the 2016 Hyundai Sonata Plug-In Hybrid, which will arrive with 22 miles of EV range and 93 MPGe. Hyundai made that announcement at the Detroit Auto Show this morning, saying that 22 miles is "farther than any other midsize PHEV sedan." Those zero-emission miles will come from a 9.8-kWh lithium polymer battery and a 50-kW electric motor. Once the pack runs out, Hyundai expects the PHEV to get 40 mpg combined (as well as 38 mpg city and 43 mpg highway) thanks to the gas-powered heart of the powertrain: a 154-horsepower, 2.0-liter Nu GDI four-cylinder engine that puts out 140 pound-feet of torque. When combined with the motor, the total system output is 202 horsepower. Hyundai is also showing off a non-plug Sonata Hybrid, which is expected to get a 10-percent fuel economy boost. The current version gets 38 mpg, combined, so that hints at around 42 mpg on the sticker when the car arrives in dealerships. The plugless model has to make due with a 51-hp, 38-kW electric motor that offers 151 pound-feet of torque and a net power rating of 193 horsepower. The two new Sonata Hybrid models have their own, more aerodynamic front and rear fascias as well as "purposefully unique wheels" that help drop the drag coefficient to just 0.24. The PHEV has a unique grille and a charge port on the front driver's side. Both models will arrive in dealerships later this year. Featured Gallery 2016 Hyundai Sonata Plug In Hybrid View 12 Photos Green Detroit Auto Show Hyundai Fuel Efficiency Hybrid Sedan