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Originally Posted by GasoLane
Will these solid state batteries be (a lot) lighter than the current ones?
If not there's no way that trucks will be using them.
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Thanks to the solid electrolyte having a smaller footprint, solid-state batteries promise some two to ten times the energy density of lithium-ion batteries of the same size. That means more powerful batteries without extra space, or more compact battery packs without compromising on power. That means powerful and longer range electric cars or more compact and lighter EVs. They are also expected to charge faster.
Better efficiency and energy density means solid-state batteries don't require the cooling and control components that lithium-ion batteries do either, and that means a smaller overall footprint along with more chassis freedom and less weight. It’s little wonder that solid state is most quoted by performance car manufacturers; Bentley sees the technology as its primary way to make electrification work for them.
Safety is another advantage solid-state batteries claim to offer. Exothermic reactions in lithium-ion batteries can cause them to get hot, expand and potentially rupture spilling flammable and hazardous liquid electrolyte; in some cases this has caused minor explosions. Having a solid electrolyte effectively bypasses this problem.
Finally, the use of the solid-state electrolyte means the batteries can withstand more discharge and charge cycles than lithium-ion batteries, as they don’t have to suffer electrode corrosion caused by chemicals in the liquid electrolyte or the build up of solid layers in the electrolyte that deteriorates battery life. Solid-state batteries could be re-charged up to seven times more, giving them a potential lifespan of ten years as opposed to the couple of years a lithium-ion battery is expected to effectively last for.
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https://www.whichcar.com.au/car-advi...relate-to-cars
The down sides are at the cost right now and the roadblocks at the atomic level.
Toyota and other makes including VW are investing heavy in SS Batteries. Toyota have a partnership with Panasonic (supplier to Telsa) and I expect big things to come out of that. Toyota are known to be tight fisted (more to do with their philosophy - think nemawashi) and won't invest in anything unless there is almost a guarantee of a good ROI.
https://www.autoblog.com/2020/12/19/...rototype-2021/
Trucks, not sure really, thinking it might depend on the use. I guess smaller metro based trucks could be BEV (Scania and Volvo have them) and longer distance might be Hydrogen based (Daimler, Hyundai, Volvo). Wait and see i guess.