Will Future Tesla Cars Use Metal-Air Batteries? 171
thecarchik writes "Most advocates and industry analysts expect lithium-ion batteries to dominate electric-car energy storage for the rest of this decade. But is Tesla Motors planning to add a new type of battery to increase the range of its electric cars? Tesla has filed for eight separate patents on uses of metal-air battery technology (for example, #20120041625). The metals covered for use in the metal-air battery are aluminum, iron, lithium, magnesium, vanadium, and zinc. Metal-air batteries, which slowly consume their anodes to give off energy, hit the news last month when Israeli startup Phinergy demonstrated its prototype battery and let reporters drive a test vehicle fitted with the energy-storage device. Mounted in a subcompact demonstration car, Phinergy's aluminum-air battery provides 1,000 miles of range, it said, and requires refills of distilled water (which acts as electrolyte in the cells) about every 200 miles."
Re:Rrrrrecharge (Score:4, Informative)
Metal-air batteries don't even pretend to be rechargables.
The little ones(most notably the zinc-air coin cells that pharmacies stock, heavily overpriced, in areas where gullible old people with hearing aids might find them) you just throw away.
The bigger ones are either a 'send back to factory' arrangement or a 'the anodes are an FRU' arrangement.
Re:Maybe for range extension, but not day to day. (Score:4, Informative)
I looked up the recycling efficiency of Aluminum in this case and found it was about 15%. This is worse efficiency than the lowest number you see for an Gas Engine. So using something like this for day to day usage seems out of the question.
But with the right packaging it might be a decent range extender in addition to a Lithium main battery pack.
Internal combustion engines are only 13% efficient. "The total fuel efficiency during the cycle process in Al/air electric vehicles (EVs) can be 15% (present stage) or 20% (projected), comparable to that of internal combustion engine vehicles (ICEs) (13%). " See http://en.wikipedia.org/wiki/Aluminium%E2%80%93air_battery [wikipedia.org]
Re:My car has a range of 6000 miles (Score:5, Informative)
The so-called aluminum-air battery actually consumes water also as part of its fuel [wikipedia.org]. The consumption of water is an equal mass with the aluminum consumed, and that 1000 mile batter pack weighs 25 kg, so it should consume 25 kg of water, or about 7 gallons per 1000 miles. So the water consumption cost will be around 0.6 cents per mile.
Re:My car has a range of 6000 miles (Score:3, Informative)
The Fluoride argument is like the Stem Cell argument. Stem Cell proponents shout "STEM CELLS STEM CELLS! LOOK, SO MUCH POTENTIAL, LOOK HOW MANY TREATMENTS HAVE SUCCEEDED!" ... and you look and they're all Adult Stem Cell treatments, while people are arguing over killing babies.
Fluoride in ground water comes from fluoride crystal deposits--it's F+ ion. Fluoridated water has F+ ion as well, IIRC... I may be wrong there. The way it gets there, however, is by adding either a fluoride salt (NaF) or complex fluorochemicals, some of which are actually acids. This is toxic industrial waste with hazmat handling restrictions.
Yeah, you want fluoride in your water. You want it in trace amounts, though; and you want F+ ion, not all the other garbage that gets dumped in your water to get F+ ion into it artificially. If they artificially produced F+ ion by stripping it out of toxic waste, you'd get something vastly different--and the argument would be entirely stupid. Instead, the argument is between people shouting "FLUORIDE" while the reality is between Fluoride and Toxic Fluoride Compounds.
Re:My car has a range of 6000 miles (Score:5, Informative)
Factoring that in along with anode replacement makes those batteries sound a *LOT* less pleasant compared to gasoline.
Funny how everyone thinks gasoline is the perfect fuel. As for Gasoline's pleasantness:
1 out of every 5 fires is an vehicle fire
33 car fires are reported across the US every hour
one person per day died in a car fire between 2002 and 2005
258,000 vehicl fires in 2007 with 395 deaths and 1675 injuries.
Vehicle fires cost Americans 1.4 billion dollars in 2007
Citation: http://www.chandlerlawgroup.com/library/national-vehicle-fire-statistics.cfm [chandlerlawgroup.com]
People are just used to cars, and have familiarity bred contempt for Gasoline, a poisonous, Carcinogenic liquid that sits near the line of deflagration and explosiveness. It has awesome energy density and portability, but that doesn't chenge the danger in it that most of us choose to ignore.
I doubt the issue you bring up is all that big a problem anyhow. Likely the battery replacement will be just that - pull the battery after a thousand miles. All done by the same service station that changes your oil. Then the AlOx gets recycled. The distilled water will indeed have some cost. Probably will come down when produced in bulk amounts needed
The interesting thing about this technology is that it doesn't require petrochemicals. Doesn't require much exotic materials either. So you can expect a Koch fueled disinformation campaign very soon. the rest of the world will be driving around in these while Americans will deny that the concept works.
Re:Maybe for range extension, but not day to day. (Score:2, Informative)
Re:My car has a range of 6000 miles (Score:5, Informative)
Ever heard of having just enough rope to hang yourself? That's what happens with a lot of scientific arguments, just like you implied with your stem cell analogy.
Yes. Basically. Fluoride is an anion (F-), and your "fluoride crystals" are fluoride salts. Fluoride (the ion) must have a counter ion with it; very simple forms would be NaF (sodium fluoride) or HF (hydrofluoric acid).
Define "complex," and why do we care if they are acids? The water won't be acidic when it reaches your tap.
This statement adds nothing to your argument. There are plenty of beneficial compounds that are toxic at high concentrations and regulated as hazards. Furthermore, there are plenty of beneficial compounds that are byproducts of other processes. You're thinking of Hexafluorosilicic acid, and you're talking about it like it's dihydrogen monoxide--you know, the dangerous toxic waste that kills millions yearly and was used by Hitler and Stalin.
The amount added to drinking water is a trace amount, and may be less than many natural waters have. If the concentrations are the same, what's the problem?
Furthermore, in the case of the two examples you gave, the "other garbage" (also in trace amounts) is sodium or silica, both of which you unquestionably consume in much greater quantities daily.
Yes, that's right, silica. According to wikipedia, in water at neutral pH, Hexafluorosilicic acid decomposes into silica, and the F- ions that kids crave:
SiF6^2- + 2 H2O => 6 F- + SiO2 + 4 H+
Silica, by the way, is the active ingredient in sand.
No, no you wouldn't, because you can't just strip out the fluoride. That's not how chemistry works. You could spend money to convert it into another fluoride compound (like NaF), but the safety of the consumer would be exactly the same either way, as long as it was pure. In fact, it's probably better that they don't use NaF, because we get plenty of Na on our french fries.
No comment.
It's really a shame that you have no idea what you're talking about, because there is actually a huge issue at stake that is just over the horizon from your argument, and that is the growing use of fluorinated carbon compounds. These are persistent, carcinogenic, endocrine disrupting, bioaccumulating, and every other dangerous word you can think of.
If you want to talk about that, then I'm sure we'd agree that we don't want halocarbons of any kind used any more than absolutely necessary (are you listening to me, State of California?), but unfortunately you've been suckered by a bunch of pseudoscientific babble.
Research on Metal Air Battery by IBM (Score:4, Informative)
Several years ago I read that IBM set up a team on researching Metal Air Battery ... lemme search the link ... ah, found it
http://researcher.watson.ibm.com/researcher/view_project.php?id=3203 [ibm.com]
The project started around 2009
Unfortunately there is no news on the Metal Air Battery project from IBM
If you have any info regarding the latest development(s), would you kindly share with us here?
Thanks !!
A link to another startup that is researching Metal Air battery --- http://gigaom.com/2013/03/01/fluidic-shows-a-peek-of-its-metal-air-batteries-for-off-and-on-the-grid/ [gigaom.com]
Re:Error in your calculation: 200 milers *per gall (Score:4, Informative)
How many people keep a car for more than 6 years?
Anyone who's not a consumerist snob or travelling salesman? Here in the UK, a lot of people do less than 5,000 miles a year, so 10 years is a more than reasonable life expectancy. Most people don't buy a new car every 2 or 3 years, there's no real need apart from showing off to the neighbours your new registration.
If you're doing 30,000 miles a year and can't afford a Mercedes, then you have a point.