Ultra High Voltage DC Power Transmission.

Only when used in a mobile fusion reactor

Low Loss and DC transmission are usually mutually exclusive .... transmission done is High Voltage AC as you can step it up and down easily with transformers - higher voltage means less current for given power means smaller cables. .... and significantly less losses than DC in high power transmission.

In UK the Super Grid is typically 400Kv for this reason.

Electronegativity determines the voltage, and the number of electrons (per unit weight of material) the charge. Maybe something clever can be done with boron chemistry but as TNP said lithium is the best metal. OK perhaps something can be done with metallic hydrogen

Yes but the UK is small on the international scale. DC on pylons wins for very long distances. High voltage to keep the current down, but in air it's limited by corona discharge. Perhaps it could be insulated.

A classic demonstration of cut and paste?

At 3,600,000 psi?? YMBJ!

As for boron, I'm no electrochemist, but my old Physical Chemistry textbook doesn't mention it in the table of electrochemical series, which has lithium at the top, with the reaction Li <-> Li^+ + e at a Li/Li^+ electrode, and a voltage of 3.025 volts. There appears to be no direct equivalent for boron, i.e. no B <-> B^3+ + 3e. In fact free B^3+ does not exist as such, because it is unstable due to its small size and high charge density. In aqueous solution it immediately hydrolyses to give H3BO3 and hydrogen.

But boron does look useful for doping graphene anodes for use in lithium batteries,

that do tot he value of existing evs? Think I'll stick with ice for a while yet.

I think you can rely on nothing better than lithium in the next 15 years minimum.

And those remaining pretty niche, but hybrids are likely to take over as the advantages there of high peak power, but modest continuous power and extremely high mpg make them a logical next step one you ditch all the GreenCrap of NetZero.

It won't. You can buy your BEV right now.

"Battery miracle" articles appear all the time in science publications, only to disappear from view.

Popular Science years ago, promised we would have flywheel powered devices in our lives. Like a spinning thing inside a lawn mower, that would spin at 100,000 RPM and you would slowly extract energy from that, to mow the lawn. Well, it didn't take a genius to figure out how practical that was. I didn't stop buying lawn mowers, waiting for a thing with a flywheel in it, running at 100.000 RPM.

There have been articles about "flying cars", forever. One just recently made an appearance. Will I stop buying cars until I can get a car with wings ? I hope not. They did have the presence of mind in the article, to casually mention you need a pilots license to fly one. And for once, they didn't mention the flying speed. Some of the previous proposed flying cars, fly about the same speed as a Piper Cub. It's not like you can travel to your destination at

Actually, if you buy your car now, you'll get Lithium Cobalt. If you wait too long to buy your BEV, that will be replaced with Lithium Iron Phosphate batteries (fairy light batteries). With about half the energy density. The Tesla cars in China use that now, the Tesla cars in other parts of the world, some of them have shipped with the iron phosphate battery in it. There may not be a notation on the car that you receive, as to what pack type is inside it.

The acceleration of the car is slightly affected (slower off the mark).

One of the benefits of the iron ones, is more charge cycles. Making it easier to reach the warranty mark for the manufacturer. It's hard for me to guess whether it affects "Fast Charging" like at a Supercharger. I've not seen a report about that aspect.

This is the latest concept car. Drag coefficient 0.17. Driving range 1000KM. Air-cooled battery pack (normally liquid cooled).

Paul

kV

I don't think I'd like a consumer grade item rotating at 100,000 rpm less than

I remember reading about this one:

It won't stop someone putting out a press release when they are looking for investors

It's more like a non-metal, so in theory you might be able to use the borate ion on the other side

There have in fact been working prototypes. And with carbon fibre now available to replace steel they could yet become viable in some applications.

The problem is not with the principle: once again the problem is with the numbers. You have two constraints - how fast it needs to go to have enough energy, and the strength limits of what it's made out of - and of course the massive gyroscopic precession that would kick the car all over the place on a bump. What technology we have today is a subset of all the technology we could have that just wouldn't work well enough - like jet packs and electric cars - which is then a subset of all the technology we wish could work well enough - like gyrocars - which is a subset of all the tech that doesn't work at all. Like matter transmitters.

Beam me up to Waitrose, Scotty...I've run out of milk again...

Wise decision, Bert. But watch out for "green initiatives" that will try to make it artificially more costly to avoid joining the lemmings being suckered down the EV route.

You call it ?suckered?. I call it 15 months of driving one of the nicest cars with the best power delivery and most amazing fuel economy that I have ever known.

Only downside is competition for public chargers so *please*, don?t buy one, sucker.

Tim

I'm very happy with my hybrid, and PHEV ticks almost all of the boxes (except for size and price). But arguably most two car families could do most of their miles with one electric.

I think that?s what most two car households will do over the coming years. If you have a foot in each camp you get the best of both. Eventually we?ll give up our diesel but given the very low mileage it?s doing at the moment it?s not going to wear out in a hurry.

Our diesel has done about 1000 miles over the last year. My EV has done about 16,000 miles over the same period.

Tim

PMFJI. In that case, neither could a bicycle turn. Consider a flywheel with its axis horizontal across the vehicle. Now tilt the axis: the flywheel, being a gyroscope, precesses, thus turning the vehicle.