The Electrum Battery: Most technologically advanced battery of all time

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This can also be called the h2o2 battery, oxygen battery, peroxide battery, or 1776 battery.
Please see my post on noble metal batteries before trying to understand this post.  This open source invention is a type of noble metal battery termed the "electrum battery".  It can be pure silver up to primarily gold.  The only requirement is silver be present.  Gold can be fully or partially substituted for platinum, palladium, or any other noble metal. It uses advanced chemistry and bio-chemistry to make the most reliable and powerful battery to date.  Electrum is a mixture of gold and silver.  Silver has a oxidation reaction of 0.7996 volts.  This means that silver is oxidative and it takes a pretty oxidizing environment to oxidize it.  Oxygen has a oxidation reaction of 0.695 volts which means it is almost able to oxidize silver.  This is perfect.  So in our battery oxygen is the electrolyte and silver the anode.  There is a solvent and there is pressurized oxygen to keep oxygen dissolved in the solvent.  When a current is drawn on the battery it pushes the oxidation forward and the oxygen is able to oxidize the silver in the presence of acid.  This acid can be anything that can donate H ions.  One interesting possibility is using CO2 gas to add the weak acid carbonic acid into the solvent.  This could be in the same tank as the oxygen or be at a separate tank to keep each pressure tunable.  Now this is all well and good but once the oxygen oxidizes the silver it turns into hydrogen peroxide which is an even stronger oxidizer which would now make the battery discharge even when no current is being drawn.  Luckily only 1 mole of h2o2 is produced for each mole of oxygen reacted.  So when the current stops, the oxygen can no longer react with the silver (it is below the oxidation requirement) and so the h2o2 generation stops, and the battery is stable.  However if we wanted to we could use this h2o2 to do something even more powerful than oxidize more silver.  We could make it oxidize gold.  Gold has an oxidation reaction of 1.692 volts and h2o2 is 1.776 volts (hence 1776 battery).  So if we have gold as a part of the anode we can now not only get out 0.7996 volts from the silver, but 1.692 volts from the gold.  This more than doubles our power.  This is why it is beneficial to include gold in the anode as an alloy or simply fused together with the silver.  There could even be two separate anodes, one gold and one silver and different voltages would come off each.  Silver is basically the catalyst to get oxygen to convert to hydrogen peroxide to oxidize gold.  This is likely very similar to how animal energy generation takes place; oxygen oxidizes iron (in heme) releasing hydrogen peroxide which oxidizes cobalt (in vitamin B12) which releases much more energy.

The cathode can be made out of iridium or preferably tantalum.  Niobium may work and tungsten probably won't work. An alloy of these refractory/noble metals is possible as well.

So in summary we have an electrum anode, and a tantalum cathode.  We have an acidic solvent between the two (water or alcohol or anything else oxygen can dissolve into) and we have pressurized oxygen (from an oxygen tank or oxygen generated in another fashion possibly inside the battery itself.)

And thats it!

This battery should be able to recharge in seconds, it will take as much power as you can throw at it.  You can also release the oxygen pressure (and co2 if applicable) which would halt any further oxidation and help the battery recharge faster.  As soon as all the gold and silver ions are reattached to the anode, there is no longer anything left in the solvent and so the solvent is no longer conductive, which makes overcharging impossible.

PS:  In order to get both metals to deposit together on the anode while recharging certain charging parameters may need to be optimized such as:

Ion concentration
Current density
Electrolyte agitation
Electrolyte temperature


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