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Hallelujah! Finally, the end of the hydrogen hype is on it's way. If GM and Toyota are ready to go to bat for electric cars then we're about to see a big shift in the alternative fuels debate.

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Yes. Hydrogen is a future technology. Electricity is a current technology that will provide a bridge to the day when hydrogen will be more practical.

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Hopefully it's *not* zinc air batteries. They've got all sorts of major problems. Why go from a hydrogen boondoggle to a zinc-air boondoggle?

Anyways, there are tons of new battery techs out there. There are literally dozens of lithium ion variants. There are sodium-ion batteries (not to be confused with other types of sodium batteries; these are notably higher energy density than lithium ion and rely on the same ion-across-membrane charging mechanism). Lithium-sulphur. batteries. Even ultracapacitors might manage to hit the stage. There are tons and tons of high energy density battery chemistries out there.

But, back to the main subject: Huzzah for the upcoming death of the hydrogen car! :)

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Hydrogen still has one advantage: instant refueling. Unless you want to exchange battery packs along the way, refilling a car with hydrogen will be faster than plugging a battery into the grid.

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Derek,

Faster than plugging into the grid, yes. The very high power densities of some lithium chemistries suggest a different charging mechanism when one is out on the road, however. Why not fill your battery in minutes from a much larger battery? The charging station's large battery would simply serve as a load buffer and would charge off the grid at a steady pace while you get your energy as quickly as possible and go. It's rather like how you currently fill your gas tank quickly from a much larger tank under the gas station rather than piping it all the way from the refinery.

I recall that AltairNano has already demonstrated some small-scale fast charging on a prototype BEV. The downside to fast-charging a whole BEV pack in minutes is that it requires hundreds of volts and thousands of amps. That means a cable like a firehose. Still, I'd love to see it happen.

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Given the the vast majority of typical distances. For the time being I see RE-EV as being a more practical idea for the time being.

After all, you can built the Volt with 40 Mile range, then take it to 60, then 80, than 100 mile EV-Range and it will only use

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Given the the vast majority of typical distances. For the time being I see RE-EV as being a more practical idea for the time being.

After all, you can built the Volt with 40 Mile range, then take it to 60, then 80, than 100 mile EV-Range and it will only use

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Given the the vast majority of typical distances. For the time being I see RE-EV as being a more practical idea for the time being.

After all, you can built the Volt with 40 Mile range, then take it to 60, then 80, than 100 mile EV-Range and it will only use less than 50 gallons of gas a year. And at that point is it really worth going through all the trouble of rapid-recharge stations to eliminate such a small amount of gasoline?

I'm under the impression that from a weight and total-cost perspective a RE-EV with a EV range of ~80 miles will likely make more sense for the next 10-20 years. Maybe EVs after that.

(Sorry about the multiple posts, fyi the 'less than' sign truncates a post)

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[quote]Hydrogen still has one advantage: instant refueling.[/quote]

Most types of modern "automotive" li-ions are capable of fast charging (5-15 minutes, depending on the type). You need a fast charger, but it's a heck of a lot easier than creating a whole hydrogen fuelling station (and you don't need to fast charge at home -- only when on the go for long distances)

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"cable like a firehose"

Depends on the battery pack size :) A four-wire split-phase 240V charge at 90 degrees for an Aptera Typ-1e, by my estimate, can be done in 10 minutes over 4/0 guage (just over a centimeter) conductors. Now if you have basically the EV equivalent of a Hummer with a 250 mile range, sure, you'll need a lot of juice flowing there. But that's where things like forced air cooling (or in more extreme cases, liquid cooling) and higher voltages come in. Or, absolute worst case, you use a charging station that your vehicle docks in rather than using a cord. Something like that would probably be needed for electric semis at the very least.

Safety is easy enough. One, you put electronics on the cord to tell the charging station not to start current flow until it has verified a secure connection. Two, you have the cord covered in a wire sheath that, if broken anywhere, cuts off charging. Do those two things, and I think you'd be *at least* as safe as a gas station, and significantly safer than a hydrogen one (sorry, hydrogen fans, but gasoline is a pain to make explode in any condition, while your stuff can leak through almost anything and can explode at anywhere from 4% to 75% concentration.)

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Note to hydrogen delusionists: Reality bites, doesn't it?

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Hydrogen doesn't provide for instant refueling. The safety precautions that go into filling a tanker truck with liquid hydrogen are tremendous.

Not sure how much energy it takes to compress hydrogen to liquid form, but you may as well convert electricity to power a generator to generate electricity to charge a battery. Probably will net about the same output.

And there's no H refueling infrastructure.

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If I recall, creating hydrogen in any reasonable quantity is fairly energy intensive (ie, it makes ethanol look positively rosey).

Other then tailpipe emissions, what was the point?

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Take a given amount of electrical energy, and use it to recharge an EV's batteries or create, distribute, dispense, and use hydrogen in an on-board fuel cell. The EV travels about 3 times farther for that same investment.

Given that we will be exceedingly hard pressed to minimize our CO2 emissions for decades to come, we have to get as much bang per buck out of our zero-carbon electrons. That makes hydrogen fuel cells, even once we can solve their myriad technical problems, a luxury we can't afford.

I would love to see the US gov't eliminate hydrogen R&D subsidies and put all of that money into battery (including capacitor) R&D. That's our future, and the sooner we get there the sooner we can make serious reductions in our CO2 emissions and oil dependency.

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Bob Lutz has never been a big fan of fuel cell vehicles - he wasn't a big fan of hybrids or electric cars not that long ago either, but GM is still very much moving towards fuel cell vehicles That's why the Volt and the next generation GM fuel cell vehicle will both be built on the E Flex Drive.

As for Toyota, in Japan Toyota is moving quite aggressively towards fuel cell vehicles, as is Honda.

Fuel cells are coming, not just because of cars, but because fuel cells will make every electronic device more efficient - such as AC's and refrigerators. That's why Honda and Toyota don't just make fuel cells for cars, but for houses as well.

Bob Lutz has never been an advocate of efficiency (and I won't even get into global warming). He doesn't get it, but the Japanese have built their auto industry around this kaizen philosophy, and fuel cells are simply an extension of this philosophy.

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@b33gee
Do you not know the majority of hydrogen today is made from steam reformation of natural gas and that natural gas resources are still limited in the US? This means in the short term we can make do, but in the long term we will just still have to depend on foreign resources. Another thing is there is absolutely no infrastructure at all for hydrogen today. As mentioned, when you look at renewable resources for hydrogen, EVs win all the time because they turn out to use the same resources more efficiently. And another thing: it's too expensive. The "Hydrogen economy" isn't all it's cracked up to be.

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Hooray! Big car companies want to milk you for all you're worth with interim technology. Seriously, if we get rid of the giant gas guzzling SUVs (with $5/Gallon gasoline around the corner, that should happend automatically) and start driving cars that get 40-50 mpg, current oil reserves should last enough to get us to the Hydrogen economy. Hopefully, a Chinese or Indian car company will decide not to play ball with the big guys and decide to skip the whole EV age.

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@Hybridcarblog
I don't know how far you have bought into the hydrogen hype, but fuel cells DO NOT provide more efficiency, okay. The only reason fuel cells are being used at home/buildings is because they can provide backup power more efficently than other fuel generators. ACs and refridgerators don't magically get more efficent from running on a fuel cell. Think of fuel cells as energy storage, like a battery. And like any energy storage it results in losses. That means besides from the energy losses MAKING the hydrogen you get huge energy losses converting to electricity via fuel cell. 60% is the absolute max number right now just from the fuel cell itself, theoretical is 83%. Comparatively a common battery can can approach 95%.
So why don't we used batteries for backup energy storage then? It is because they don't provide enough energy storage for the same volume. With fuel cells you only need a huge tank of fuel or a fuel line and a fuel cell to store energy. With a battery you will need a VERY huge battery to store the same energy. That means the battery will likely turn out to cost way more to store huge amounts of energy. But in no way is the fuel cell more efficient.

On the other hand, if you go down to smaller scales like in a car the battery itself will be way less expensive than the fuel cell alone. Not to mention the cost of the high pressure hydrogen tanks. The fuel cell (notice this is applying to fuel cells in general not just hydrogen fuel cells) is cost effective when used in large scales like buildings since they will likely replace other expensive generators, but in cars, not so much.

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psarhjinian/Jake,

You dont HAVE to use natural gas for this. There are alternative energy sources available. For example, Norway is testing a Solar powered independent Hydroden Kiosks that use electrolysis to generate hydrogen fuel. All you need is sunshine and a water supply. Lets not get so myopic in our solutions. The preze was babbling on the other day about how we are 'leading' the world in everyting including energy independence ( Sometimes I wonder if this man is even aware of his surroundings), surely we can come up with some other ways to create Hydrogen? Just divert 10% of the Pentagon budget to Alternative energy R&D and I gaurantee that American businesses will be guying out Arab banks and real estate and not the other way around.

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@b33gee
Underline the word ELECTROLYSIS. This is where hydrogen loses every time using renewable energy because electrolysis itself is a expensive way to make hydrogen when it can be put to better use. Use the electricity directly and you are guaranteed to get way more from your renewable resource. Also 60% efficiency right now in fuel cells. That is a HUGE loss when power transmission is at least 90+% efficient, and batteries approach 95%.
That is why natural gas reformation is the most popular right now, because it is the only way right now that is cost effective compared to gasoline. Electricity on the other hand has always been cheaper than gasoline for driving. Until there is some other renewable way to make hydrogen besides from electrolysis, hydrogen from renewables don't make much sense when the electricity is put to much better use in an EV/PHEV or powering a home.

@Miguel
You can make the same argument for EVs and quick charging stations and you get more from your money for cars. What you haven't address is distribution infrastructure. The best scheme right now is using natural gas or electricity to produce hydrogen on site, but besides from that there is no other refueling infrastructure for cars, and plays a large part on why manufacturers are only releasing fuel cell vehicles in small numbers and select locations; so it appears it's not so easy to switch. The 40 billion kg you quoted is made largely from natural gas reformation & is already accounted for. You WILL need additional production/infrastructure to satisfy a fleet of h2 fuel cell cars.

EVs and PHEVs are only getting a fraction of the government money that hydrogen fuel cell research is getting, and they are still much more effective than h2 fuel cells for cars right now. And unlike hydrogen they don't need any new infrastructure. The DOE estimated the US's offpeak electricity can power 84% of the 220 million cars in the US if they were PHEVs. That's 184.8 million cars with no new infrastructure.
To both of you: I'm not arguing that we should not continue to research on hydrogen fuel cells. I am simply arguing that hydrogen fuel cells are more useful for some of things you pointed out, like backup power for buildings, cell phone towers, and more expensive vehicles like buses, trucks, and airplanes.

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