Motor Mouth: This is the battery revolution that will make EVs practical.Motor Mouth: 5 Times the battery range, one-fifth the weight!.In contrast, solid electrolytes are more stable, there is no risk of leakage, there’s no need for a separator, and they are less prone to the degradation caused by heat. These batteries are also more susceptible to the deterioration caused by the heat created by a repeated charge-discharge cycle. The current lithium-ion batteries use a liquid electrolyte, which must be sealed to prevent leakage and must include a separator to prevent a possible short-circuit between the anode and cathode. The shift to the all-solid-state battery is being touted as a game-changer. The goal is to start the demonstration line in the spring of 2024. To move beyond lab-based production, Honda is set to invest approximately $400 million (43 billion yen) to build a demonstration production line for its all-solid-state battery. The key to mass production is to maintain the lab-like environment and precision of the build process, but to ramp everything up to a real-world speed capable of producing the number of batteries needed. While the process seems relatively straightforward, it is demanding, and, at this point, agonizingly slow. At this point, each of the oblong cells being produced is rated at 0.8-kilowatts.Ī diagram showing part of the Honda all-solid-state battery production process Photo by Honda The finished pack is then sealed in a plastic pouch to protect it from moisture. Once assembled, this elaborate sandwich has the connection tabs added, and the whole lot is precision-rolled to ensure consistent connectivity (“interface adhesion,” in Honda speak) over the entire surface of the assembly. Plus, the green transportation industry needs all the tech it can get to meet its very ambitious goals.This advertisement has not loaded yet, but your article continues below. Still, 24M's tech appears to be more than just a lab experiment and could boost battery technology in the near future. However, it has yet to reveal much about the battery chemistry and didn't say how many batteries it actually shipped - and the landscape is littered with failed battery startups. That deal is not yet closed, however, and Maxwell investors are reportedly suing to block it.Ģ4M has touted manufacturing costs 40 percent lower than regular batteries. It recently announced the acquisition of Maxwell Technologies, which could help it significantly improve its current batteries. It also supplied an industrial partner with batteries that achieved an energy density of 280 Wh/kg, and has seen up to 350 Wh/kg in the lab.īy contrast, Tesla's state-of-the-art 2170 Li-ion cells reportedly have energy densities up to around 257 Wh/kg. The electrodes can also store more energy, making the entire battery more efficient.Ģ4M is funded to the tune of the $7 million by the US Department of Energy, with the aim of developing cells with a 350 Wh/kg density by the end of 2019. It also cuts down on the need for "filler" materials like plastics, copper and aluminum, reducing costs. Regular lithium-ion batteries have electrodes arranged in multiple layers called a "jelly roll." By using different materials, 24M can build thicker electrodes and eliminate much of the manufacturing complexity. The company thinks it could do even better, making EVs longer lasting, lighter and cheaper. That roughly matches Tesla's 2170 cells used in the Model 3, considered to be the most efficient cells around. 24M, a US Department of Energy-funded startup, announced that it has delivered semi-solid state lithium-ion batteries with energy density levels of 250 watt-hours per kilogram (Wh/kg). The race to create cheaper, longer-lasting batteries just got more interesting.
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