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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 And Kia To Pay US $100M For Overstating MPG

Korean automakers Hyundai and Kia will pay the U.S. government a $100 million penalty to end a two-year investigation into overstated gas mileage claims on about one-third of their models. The government says the civil penalty is the largest for a Clean Air Act violation in U.S. history. The discrepancy was discovered after the EPA got complaints about lower-than-advertised mileage on Hyundai's Elantra compact. Audits discovered overstated mileage on the Elantra and other models from 2011 into 2013. Hyundai says it made honest mistakes in interpreting complex EPA mileage test requirements. Neither company admitted liability and both maintain they complied with the law. Generally mileage was overstated by one or two miles per gallon on 13 vehicles. But one vehicle's highway mileage was 6 mpg higher than the EPA tested. Auto News Hyundai Kia mpg

Nissan Z Proto, next-gen Hyundai Tucson and a hi-po mystery Bronco | Autoblog Podcast #645

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Senior Editor, Green, John Beltz Snyder and News Editor Joel Stocksdale. In the news this week, Ford has teased some sort of high-performance Bronco, Nissan unveiled the Z Proto, Hyundai revealed the next-gen Tucson and GMC teased the Hummer EV's "Crab Mode." Our editors break that all down for you, and share some insights and opinions before they turn to the cars in their own driveways. This week, they've been spending time with the 2020 Mercedes-AMG G 63, as well as the 2020 BMW Alpina B7. Autoblog Podcast #645 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Ford's beefed-up Bronco prototype stars in new teaser photo Nissan Z Proto previews the retro, rear-drive, turbo, manual future of the Z All the Nissan Z cars that got us to the Z Proto 2022 Hyundai Tucson debuts with striking styling inside and out GMC Hummer teases crab mode, reveal set for Oct. 20 Cars we're driving: 2020 Mercedes-AMG G 63 2020 BMW Alpina B7 Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video: