I'm new at opensourceecology and I want to ask what the project status of the OSE Battery is?

In the Nickel-iron battery, is the energy stored in the metal plates, or in the electrolyte solution? To expand the battery capacity, do you add more metal or add more liquid? I'm a bit confused as to where and how the energy is actually stored.

Aaron, see their latest paper, where they not only detailed a scalable production process, but analysed the electrical properties of their 'Laser-Scribed Graphene Micro-SuperCapacitors using different coatings and electrolyte gels.
I was happy to see that they could use something like PVA + H2SO4 as a hydrogel electrolyte film, but I was kinda disgusted that they were using Polyimide tape (which is extremely difficult to recycle, let alone degrade or destroy) and "fumed silica (FS) nanopowder with the ionic liquid (IL) 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide" as an ionogel, after saying in the aforementioned video that their capacitors could be composted once they wear out (which to be fair would take many thousands of cycles).

Figure 7: Energy and power densities of Laser-Scribed Graphene
Micro-SuperCapacitors compared with commercially available
energy-storage systems.

"LSG-MSCs exhibit ultrahigh power and energy densities compared with a
commercially available AC-SC, an aluminium electrolytic capacitor and a
lithium thin-film battery. LSG micro-devices can deliver ultrahigh power
density comparable to those of an aluminium electrolytic capacitor,
while providing three orders of magnitude higher energy density."

That's still two orders of magnitude below the energy density (note 1 MJ/l ≈ 0.28 kWh/l = 0.28 Wh/cm³) of lead-acid batteries at best, but these were with some very basic rectangular shapes. I hypothesise that if the pattern scribed was pushed to the limits of what interface length the laser can produce, perhaps with two spirals following each other towards the disc centre so that the laser-scribed lines are aligned almost radially, then you might be able to get reasonable storage out of it.
At present though, the price on small quantities of Graphite Oxide makes them quite an expensive solution for storing energy, even if the high resilience and low entry-cost of R&D/manufacturing might seem tempting (after a 10 second search, I find that I can get a brand new lightscribe external dvd drive delivered to me for £10 via ebay, but finding a good price on graphite oxide takes a lot longer and probably involves alibaba).

Welp they dont sell the oxide. But they sell the stuff for the hummers process


Some links
http://credentiality2.blogspot.co.nz/2013/01/making-graphene.html

http://en.m.wikipedia.org/wiki/Graphite_oxide#section_1

Roth, if I understand correctly the nickle diode changes from nickel II to nickel III and back. The electrolyte just facilitates the back and forth to the iron. I assume if there wasnt enough though it couldnt move enough making it the limiting factor

sweet, pics?

can u test the voltage? i read idealy its supposed to have 1.2 volts per cell. might be interesting to see if youre getting there.

hello everyone, I'm new in this forum. I write from Spain, I live offgrid for 4 years.
I would like to ask why OSE does not consider the construction of lead / acid batteries with the "Planté" method.

They are relatively easy to build with few resources available. Moreover, the manufacturer is not in contact with the oxides of lead in no time.

it is also possible after many decades reconvert l 'lead oxide in pure lead to 99% using the technique of "reduction of oxides."

In my Italian forum we discussed a lot of this problem and is at an advanced stage to build the first version.

here some photos

http://offgrid2.altervista.org/viewtopic.php?f=7&t=372&p=8749&hilit=planté#p9036



and others ideas

http://offgrid2.altervista.org/viewtopic.php?f=7&t=294






greetings
MaX

i posted a short little concluding review of the focus session on the battery.

im sorta thinking next week ill really dig into what materials are needed for the cathode and anode. probably start on the weekend. if anyone wants to i might do a google hangout or something. really just want to get something that works and hopefully iterations can develop from there.

im not sure where i found the link originally but this patent describes a process that galvanizes regular nickel with nickel hydroxide.

If you want to know about why and how Edison created the Iron-Nickel battery start from the original documentation put out by the Edison Battery Company.

http://books.google.com/books/about/The_Edison_Alkaline_Storage_Battery.html?id=IKIgAAAAMAAJ

Here is a document that describes the plant where they were made and how.   Until you can create the original all you are doing is wasting your time.

Bob Teeter