In most of these 'breakthrough battery' flyers, the 'dog that did not bark' is the giveaway, ie, they don't talk about some important criteria such as energy density, cycle life or whatever, and go on endlessly about the bits they are good at.

I have not spotted a lacunae here, as far as I can see they cover all the bases, looking back at the previous linked articles and so on.

Early days, and prototype only as yet, but I have not spotted the 'gotcha'

Anyone?

Hi Jim

Where the grid is deficient for the load, then if we don't fancy diesel gen sets, which obviate the point of BEVs, then the most readily rolled out solution is fuel cells:

https://www.plugpower.com/hydrogen-for-ev-charging-stations-will-get-more-evs-on-the-road/

It ain't just Plug Power offering this solution:

https://www.greencarcongress.com/2020/12/20201225-abb.html

And others.

Jim:

For topping things up, efficiency is not the primary criteria.

Of course you charge the cars from the grid where that has enough power, the issue is excess loads on the local grid, so you top up, and the realistic alternatives are diesel gens and fuel cells with stored hydrogen, which is not there to replace grid power, but to supplement it.

If that is only happening for relatively little of the time and energy needed, then any loss of efficiency in the total system can be coped with as it is far, far less than the reduction in efficiency per KWh when it is needed.

And unlike diesel, local renewables can chug away topping hydrogen up, whenever power is surplus and cheap.

For areas like the American midwest, local solar etc can realistically supply hydrogen in a reasonably compact area, whereas they can't cope with the sudden extreme loads to have a fully renewable system for battery charging without hydrogen etc as an intermediary, at least for trucks, due to the very high power as against energy loads.

@peskanov:

You may have spotted the 'gotcha'

Here:
https://www.businesswire.com/news/home/20230519005396/en/Prieto-Introduces-World%E2%80%99s-Fastest-Charging-Battery-That-Charges-in-3-Minutes/?feedref=JjAwJuNHiystnCoBq_hl-YKT6SDyMw5Lye4ovXwHmkqD8R-QU5o2AvY8bhI9uvWSD8DYIYv4TIC1g1u0AKcacnnViVjtb72bOP4-4nHK5idAXrgr_e1ZUbxvK6BY66Xm

they claim:

' Prieto’s battery is designed to deliver five times the power density (20C discharge rate) and up to three times the energy density of conventional 2D batteries.'

'up to' is always tricky, and here they claim only:

'increase in VOLUMETRIC energy density'

So the specific energy could be anything, including lousy!

Well spotted!

@yoat, well you don't have many options for a (say 500 KW) charger, especially if you want to charge several vehicles one after another.

If you want individual quick charging, you can use: 500 KW input line or:
Big 500 kW battery, or 500 kW kinetic energy store.
If you want to do a series of cars, you need the 500 kW line, or HUGE batteries.
(The same applies for everything down to 100 KW charging, after that it gets easier.)
Alternately, have a range extender in the vehicle (which should not be used that much; but is there to keep the battery sized to typical use, rather than extreme or theoretical use cases).