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Energy density per $ is not the metric for new transportation storage. Its kWh/pound that's critical. They don't mention it?
I can imagine trains can be extra heavy, and scooters might require less overall energy capacity.
Earlier quoted context omitted.
Can you explain what "woo" means in this context? I've seen it used a lot lately, but it's new to me.
Reading the sibling link, it looks like this person is using "woo" incorrectly in this context. Good science/technology often has failed outcomes (which isn't woo). I'm also presuming the University of Adelaide isn't practicing pseudoscience.
Zinc/manganese has been around for decades; in fact, it's the standard issue disposable battery: https://en.wikipedia.org/wiki/Alkaline_battery "An alkaline battery (IEC code: L) is a type of primary battery which derives its energy from the reaction between zinc metal and manganese dioxide." The new permutation which allegedly ups the energy density and allows it to be safely recharged supposedly uses a different el…
I think it would be nice if there was a site that tracked all these announcements, that is had a listing of all of them and how each has done in the following years.
If anyone's interested here's an actual company selling a real Zinc-air product: https://eosenergystorage.com/about-eos/ Two largest downsides of this technology are: 1. Round-trip efficiency of 75%. 2. Low power density. Cost and cycle life are great though - should be great for grid storage.