MitchJi wrote: Continuous discharging of 50,000 mAh/g (per unit mass of the carbon, catalyst and binder) has been experimentally confirmed.
What's the wH per gram? Is it lithium's usual 3-4 volts, and so that's 150-200 wH/g?
If so, dang. Are you sure that's not 150-200 wH/kg? Wait, lipoly is 130-200 wh/kg as wikipedia suggests so that wouldn't make sense, but yet a thousand-fold increase doesn't make sense either - that just seems to be too extreme. http://en.wikipedia.org/wiki/Air-fueled ... on_battery
states a ten-fold increase.
What I'm curious about, though, is the power density. I've heard that lithium air has a pretty poor power density - Might be OK for energy sipping laptops, but it doesn't yet seem practical for EVs. If it's cheap and your car has a lot if it, it might be suitable for capacity and some other form of lithium would be suitable for that main current to get that good acceleration and speed.
Anyways, with this and silicon nanowires (And with fringe technologies like EESTOR), it seems likely that there's going to be some pretty dramatic improvements within the next decade with energy storage.
I think I found a first-source or very close second source or review at http://www.aist.go.jp/aist_e/latest_res ... 90727.html
Here's where I found a reference to the actual current:
The newly developed lithium-air cell with alkaline aqueous electrolyte gel has a discharging capacity of approximately 9000 mAh/g when it is discharged in the air at a discharge rate of 0.1 A/g.
I don't know what the output voltage is (It's probably in the paper somewhere), but even if it's 1 volt, that's a power density of .1 watt/g or 100 watts/kg. With an output voltage of 3, that goes upto 300 watts/kg. That seems like its in the neighborhood of ping's gravimetric power density. If the volumetric power density goes up at least 10x, then that would certainly be a usable LEV power density. I think I'll read through the paper to see what relevant values I can get.
Some clarifications of the research.
They tested 50 Ah/g at .1A / g with a "20 day" rate with an aqueous solution (Liquid solution) as opposed to a gel. Do thenumbers add up? 500 hours = 20.8333 days. Sure does. The output voltage averaged at 2.9 volts. That corresponds to ~150 Wh/g which is remarkable - that's like 15,000 Wh/kg. The gel solution got 9 Ah/g, which corresponds to 27 Wh/g which is still pretty amazing. 2700 Wh/kg? I assume the average output voltage was 2.9 volts in that case with .1A/g. Gasoline's energy density is around 12,000 Wh/kg and in the typical petrol car, the "usable energy" density is more like 2000-3000 Wh/kg. This is lithium with a usable specific energy density comparable to or exceeding gasoline.
The gravimetric power density was 2.9 volts * .1A / g = .29 watts/gr. That's 290 watts/kg, which is a little better than ping's gravimetric power density. It looks like 3C or 4C batteries in relation to weight? More exactly, ping rates his batteries at about 1000 watts/5.5 kg or 180 watts/kg and 2C. 290/190 = 1.53 times the power density ~= 3C.
Now, for volumetric power and energy density...
I couldn't find any references to volume. Any educated guesses? If the battery is essentially filled with air...