Graphite-Paper - Aluminium-Foil galvanic cell with 1.7 to 1.92 Volts

[broli]

In my graphene research I found this process to make small graphene sheets out of graphite using a simple electrochemical process. Here's a video of it:

http://idv.sinica.edu.tw/lanceli/electrochemical%20exfoliation%20%28H2SO4%29.mov

Perhaps using this nano material can enhance the voltage/current of your battery.

[IotaYodi]

A materiels source Fyi.

http://www.unitednuclear.com/index.php?main_page=index&cPath=16_17_69

http://unitednuclear.com/

[PhiChaser]

@ Stefan:
You can find zinc strips for killing moss in the garden department at your local hardware store. They also make a zinc (may be zinc oxide?) paint which may work well if sprayed onto paper? You could use the other side for something else??

Happy experimenting,
PC

[hartiberlin]

In my graphene research I found this process to make small graphene sheets out of graphite using a simple electrochemical process. Here's a video of it:

http://idv.sinica.edu.tw/lanceli/electrochemical%20exfoliation%20%28H2SO4%29.mov

Perhaps using this nano material can enhance the voltage/current of your battery.

Many thanks for this video.

Are you sure that this decomposed Graphite sheet was then graphene ?

How strong was the H2SO4 acid solution ? What percentage ?

What was used as the other electrode ?

How much graphene to graphite ratio did you get out of the powder when filtrated out ?
How much more conductive is graphene then ?

Many thanks.

Regards, Stefan.

[hartiberlin]

Many thanks also for the united nuclear link.


Well, does anybody have an idea, how to get a very thin coppersulfide or iron pyrtite ( iron-sulfide) layer
onto the graphite paper electrode ?

If there would be any easy method via electroplating or via a solution to
get a thin layer of these materials onto the graphite paper layer we might just get an easy solar cell.

As coppersulfide and iron-sulfide are semiconductors we might get a good bandgap and thus a PN layer
for converting sunlight directly to electricity.
As iron poyrite is also conductive we would NOT need an additional layer to collect the current!
So just oine electrode would be graphite paper and the other electrode would be iron pyrite  ( iron-sulfide).

The question now is, how to bring a nanometer thick layer of this iron pyrite onto the graphite paper cheaply...

Any ideas ?

Regards, Stefan.