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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.

CES 2018 brings a buffet of automotive tech — here's a taste

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Toyota plans biggest stock buyback in over a decade

At the end of December, 2013 Toyota had a cash stockpile of 1.8 trillion yen ($17.5B US). As of March 31, at the end of its current financial year, company coffers are expected to swallow another 1.9 trillion yen ($18.4B US) in net profit - said to be a record sum for the Japanese automaker. In a gesture signaling a turnaround from the horrors of the global recession, Bloomberg reports that Toyota will buy back 60 million shares of its stock, as much as 1.89 percent of the company, for something like 360 billion yen ($3.5B US). It's the first buyback since 2009 and the largest buyback since 2003, when it spent roughly 390 billion yen ($3.8B US) repurchasing shares.
Company president Akio Toyoda founded the Toyota Mobility Foundation (TMF), a non-profit that will support international groups working on transportation issues in emerging markets. Half of the stock that Toyota buys, 30 million shares, will be sold to the foundation via the Japanese Trustee Services Bank for one yen per share, the dividend providing the foundation's initial funding. The other 30 million shares will be canceled, a company spokesman telling Reuters that the company wants to reward shareholders.
Industry analysts have been asking Toyota to either return money to shareholders or invest in new factories, but Toyota has ruled out the latter. After getting burned with excess capacity when the financial crisis came, the company is focused on extracting efficiencies from the plants it already has. Toyota has said it plans to complete the buyback by June of this year.