The comments about Moore's Law are right on the money. Consider this comment by Bill Gates in 2010 about batteries: "They haven't improved hardly at all. There are deep physical limits. I am funding five battery start-ups and there are probably 50 out there. (But) that is a very tough problem. It may not be solvable in any sort of economic way." See the article, "We've been spoiled by Moore's Law," here: http://news.cnet.com/8301-13860_3-20013064-56.html
We all know that current battery tech is not good enough for EV built for masses. It remains to be seen whether battery innovations can change that.
One thing that fuel cell discussion typically does not mention is fuel cells using gasoline as their energy source. Gasoline fuel cells (GFC) should raise the MPG of typical car by 2x or 3x. Of course that will not be zero pollution, but those could lower the emissions without needing any infrastructure changes, since they would be using the same old gasoline, just less per each mile. Now the important question will be what would be the price of such GFC and what weaknesses would those have, assuming affordable GFC.
I think GFC would give a way to improve MPG while we wait that E-CAT comes to cars and gives us zero tailpipe emissions.
I think Chuck's earlier comment about gasoline-powered vehicles' performance giving us higher expectations, combined with visualeyes' comment about higher expectations that Moore's Law has given us in all technologies, are worth thinking about. I've always found it interesting that many have treated Moore's Law not as the simple observation it originally was when Moore made it, but as a prediction and even a prescription about what we should do with technology and what it should do for us.
Take a look at that picture of a Li-Ion battery pack and then visualize a gas tank. That alone should kill any fantasy about batteries being a substitute for combustible liquids. In terms of motive power, the Chevy Volt's battery pack is equal to about ONE gallon of gasoline, and look at all the complexity it takes to make it even that good. I might also add that a gas tank doesn't wear out, and is trivial to recycle.
In defense of battery packs, though, the real standard of crash safety should be whether they're as safe as gas tanks. If they don't cause dangerous fires any more readily than 20 gallons of gas, that should be good enough. I realize that we live in a litigious society and anything new and mildly dangerous is bound to attract lawsuits that things that are old and highly dangerous never would. If electricity and gasoline were invented today, the public would never be allowed access to either of them.
My opinion exactly... Were people able to consider the electric car on a par with post WWII tech, at the start of post war competition and population mobilty, comparing electric would be easier.. Also Moores law in electronics raises expectations for improvments in other technologies unrealistically. AS for battery weight, I would gladly trade my 1264 pound lead acid pack in for a 600 pound lithium pack if it didn't mean handing over my $10 K to a foriegn government's company. Having converted rather recently, in 2003, never to turn back to gas, it's harder every day to understand why the US is still clinging to such a 20th century technology. Imagine YOUR laptop on AAA batteries!
There are many Li-ion chemistries. The various chemistries have widely ranging properties including inherent safety. Some have known issues with safety and some don't. The ones that do have issues tend to be those that can store the most energy and are tricky to charge quickly. People that use them also tend to run the cells from 80% charged to 20% charged to avoid either overcharge or undercharge which can shorten life or ruin the battery.
The Li-ion chemistries that don't have safety issues tend to not store nearly as much energy but can be charged and discharged extremely quickly and can be run from full charge to full discharge.
Chevy went with a chemistry that had safety issues.
So when reporting always specify the Li-ion chemistry involved so that the whole technology doesn't get a bad rep because of a few.
And I'm old enough to remember the Pinto gas tank problem. Gasoline is extremely dangerous and all that stands between safety and disaster is a fraction of a millimeter of steel or a couple millimeters of plastic. A friend of mine lost a daughter when someone T-boned his station wagon and the gas incinerated her.
The biggest issue with the chemistry that Chevy is using is to predict the delayed reaction.
And the other more imminent issue with battery power is training emergency responders in dealing with the potentially deadly orange wires after a crash.
@jhankwitz: Actually, neither of the bombs dropped on Japan during World War II was a hydrogen bomb. The first hydrogen bomb (the Teller-Ulam design) was tested by the U.S. in 1952. And the fusion fuel used in hydrogen bombs is either deuterium or tritium (or a mixture of the two), rather than ordinary hydrogen.
As far as the Hindenberg disaster (which I think more people today remember from the cover of the first Led Zeppelin album rather than the actual event, which took place in 1937), there has been debate about the exact role which hydrogen played.
That being said, you're right that perception and reality are often two different things. This is particularly true when it comes to safety and risk. Studies have repeatedly shown that our brains react much more strongly to unfamiliar risks than to familar risks, even if the familar event is much more likely. A now-classic example is the decision of many people to drive rather than flying after the September 11 attacks. Since driving is actually much more dangerous than flying, it's believed that this may have lead to about 1000 additional fatalities.
In any case, the same thing which makes hydrogen relatively safe also makes it a relatively poor fuel: its energy density is low compared to batteries, and especially compared to gasoline.
With all of the press about EVs, I had the impression that technology was sound and that EVs were the future. It seemed it was just a matter of scale and volume before prices would come down to a level that would make these vehicles affordable. Your recent articles are penetrating that myth a bit, Chuck.
What should be the perception of a product’s real-world performance with regard to the published spec sheet? While it is easy to assume that the product will operate according to spec, what variables should be considered, and is that a designer obligation or a customer responsibility? Or both?
Biomimicry has already found its way into the development of robots and new materials, with researchers studying animals and nature to come up with new innovations. Now thanks to researchers in Boston, biomimicry could even inform the future of electrical networks for next-generation displays.
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