Perpetual batteries from Vasilescu-Karpen

[d3x0r]

ya closer...; I'd like to see evidence of the catalyst effects... like I didn't see nickel used to de-base (I know it's uhmm... alkafy) an alkaline solution... (remove OH should make it more neutral)... maybe something like to precipitate K from KOH...
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I make a few more experiments on Al-C battery, got some distilled water.  Immediately the voltage and current was higher; putting in  weak Ca(HCO3)2 solution is lower output.
I'm going to make more like a cell-thing as opposed to electrodes sitting in bowls of water.  Going to use aluminum foil instead of aluminum sheet so it decays faster.  Now I know that Al_mO_n is a insulator, so having that disolved by calcium carbonate will extend the usable life some, yes?

[MarkE]

Years ago Boeing developed a long life Al O2 battery for dealing with the mine shaft gap.  IIRC, they went mildly acidic with the electrolyte.  I think it was dilute citric acid.

[d3x0r]

Years ago Boeing developed a long life Al O2 battery for dealing with the mine shaft gap.  IIRC, they went mildly acidic with the electrolyte.  I think it was dilute citric acid.

Hmm that looks like a couple of random things thrown together...


"mineshaft gap"  from Dr Strangelove  https://www.youtube.com/watch?v=ybSzoLCCX-Y 
"Sadeski notes that, within ten months of the activation of the doomsday device, the surface of the earth will be uninhabitable. Dr. Strangelove recommends that the President gather several hundred thousand people, with a female-to-male ratio of 10 to 1, to live in deep mineshafts in order to escape the radiation, and to then institute a breeding program to allow the United States to repopulate the surface after a hundred years have passed. Gen. Turgidson warns that the Soviets will likely do the same, and worries about a "mineshaft gap.""


What does boeing have to do with mining?


Aluminum-air battery http://en.wikipedia.org/wiki/Aluminium%E2%80%93air_battery  ...
can make such a thing with a layer of paper towel, a peice of aluminum and a peice of carbon (tested, success)  with no electrolyte (well previously the paper towel was soaked in water/calcium bicarbonate, so it is probably slightly humid still.


http://www.gizmag.com/aluminium-air-battery-could-extend-ev-range-by-1000-km/32454/
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Lasersaber air battery https://www.youtube.com/watch?v=Yx_wjlMO3OI  - carbon tube wrapped with paper towel and a magnesium strip.  Think he eventually submersed this in oil.  https://www.youtube.com/watch?v=wG8qyN7y-PE (2)



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https://www.youtube.com/watch?v=mVSrm8q4G_8 older aluminum air-carbon battery from robert murray

[profitis]

Here's for you d3xor http://onlinelibrary.wiley.com/doi/10.1002/anie.201301066/abstract there's tons of studies on the oxygen evolution reaction in alkali on nickel

[d3x0r]

Thanx profitis; but they say that the carbon part of it is important... are they just overcomplicating it?


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Re: my higher power aluminum-air battery
1) did I mention that plain distilled worked?  Pretty sure the cup was fairly dry and free from any amount of other minerals of any quantitty.
2) I found radio shack had a conductive glue (sodium silicate with high concentration of graphene powder).  Used the glue to glue aluminum foil to one side of graphite plate squares.  Used some 1/8" diameter dowel rod as a temporary separator in a corner molding and used hot-glue to coat 3 sides, leaving 1 side open.  In theory it looked like it should work... a) at one point a side was somewhat tacky and stuck to a surface separating from the carbon plates b) even though it looked like a solid seal it was highly leaky.... have to come up with a different scheme; maybe silicon.


graphite - gap - aluminum-graphite - gap - .....(repeat - aluminum-graphite - gap - ) - aluminum; each (carbon-gap-aluminum) should be closed to have its own water
altogether should be like a 15V battery.


In theory I've baked a few tablespoons of baking soda into calcium carbonate; don't really have a way to test it... other than small amounts dissolve entirely so  it's not just calcium