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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.

2020 Subaru Outback and Cadillac XT6 drives | Autoblog Podcast #590

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Senior Green Editor John Snyder and Associate Editor Joel Stocksdale. This episode is all about driving, on- and off-road, and in a variety of vehicles. In particular, the trio are talking about recent experiences in the 2020 Subaru Outback, 2020 Cadillac XT6, 2019 Mercedes-AMG C 63 S and 2020 Hyundai Palisade. At the end, they tackle an interesting and particularly tough "Spend My Money" question involving whether or not to put off purchasing a Jeep Wrangler in favor of a sensible daily driver. Autoblog Podcast #590 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 Driving the 2020 Subaru Outback Driving the 2020 Cadillac XT6 Driving the 2019 Mercedes-AMG C 63 S Sedan Driving the 2020 Hyundai Palisade Spend My Money Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video:    

Hyundai puts its hydrogen development program on hiatus

UPDATE: According to Pulse news in South Korea, Hyundai denies that it has paused development of hydrogen fuel cells. Instead, the report suggests the team was reshuffled as technological hurdles have slowed down progress. Time will tell which version of the report is factual. Hydrogen technology has reportedly lost one of its biggest and most vocal proponents, at least for now. Citing a long list of hurdles, Hyundai has allegedly stopped developing the hydrogen-electric powertrain it planned to put in several of its cars (including Genesis models) in the coming years. Anonymous sources told South Korean publication Chosunbiz that executives pulled the emergency brake after analyzing the results of a feasibility study. Nothing is official at this point, and the report stresses that the pause is temporary. However, the issues reportedly found are relatively serious: they include unspecified technical problems and a lack of marketability due in part to cost-related concerns. The news comes as a surprise because Hyundai has invested a tremendous amount of resources into making hydrogen a viable alternative to gasoline without many of the inconveniences associated with EVs, like long charging times and limited driving range. It's one of the few carmakers in the world that sells a hydrogen-electric car (the Nexo; pictured), and it announced plans to build about 130,000 hydrogen-powered cars annually by 2025. And yet, the Nexo is a tough sell, even in hydrogen-friendly markets like South Korea; 8,206 units were sold there through November 2021. The 671-horsepower Vision FK concept unveiled earlier in 2021 will seemingly remain at the prototype stage. Interestingly, a separate unverified report claims that Hyundai has also shuttered its engine development division. If both are accurate, it means that the Hyundai group (which includes Kia and Genesis) will exclusively develop electric powertrains starting in the near future. Several car companies have tried to pelt hydrogen-powered cars into the mainstream over the past decade and most have failed. Some of the issues facing the technology include the lack of a charging infrastructure and governments with a single-minded focus on EVs. There are 48 hydrogen charging stations in America, according to the United States Department of Energy, and 47 of those are located in California. While that's great news for Californians, it makes the Nexo completely useless for someone driving from Salt Lake City to Seattle.