"The Natural Philosopher" wrote in message
...
On 26/05/2021 15:30, newshound wrote:
On 26/05/2021 10:14, John Rumm wrote:
On 25/05/2021 21:22, newshound wrote:
On 25/05/2021 19:56, Chris Hogg wrote:
On 25 May 2021 17:52:19 +0100 (BST), Theo
wrote:

I came across this article:
https://arstechnica.com/science/2021...der-your-nose/

It's a good roundup of all the different lithium ion chemistries and
how
things have been improving of late, and how that impacts applications
such
as phones and EVs.

Theo
" That means that the capacity of your current batteries is over 1.5
times what they would have held a decade ago."

Am I supposed to be impressed?

Not exactly Moore's Law, is it. Of course it is still worth having. In
the absence of real physics/material breakthroughs (like, for example,
a single layer atomic structure like graphene, but an insulator) it's
getting close to physical limits, although cost will continue to come
down.

Funny you should mention that, but:

https://www.forbes.com/sites/michael...an-lithium-ion



Interesting.

I forget the numbers, but doesn't a motorway petrol station effectively
deliver tens of megawatts of power when its fuel pumps are all going. So,
to achieve equivalent performance in terms of "refuelling" times
recharging stations are going to need fairly substantial grid connections
as we reduce the present battery charging rate restrictions. Or else be
connected to a hydrogen grid with some big fuel cells. Either way, there
are significant infrastructure questions on top of any basic technology
solution.

yes, but they are really not show stoppers.

Also, most of the demand for charge will be during the working day.
Petrol stations have very efficient storage so although the capital (the
pumps) is under utilised, it doesn't screw the economics because these
are cheap.

I am sure a fast motorway charge will not come at domestic rates

But what matters is how it compares with the cost of petrol.